{"title":"Motor","description":"\u003cp align=\"justify\"\u003eMotor components are the backbone of any high-performance engine, ensuring that each part works harmoniously to deliver optimal power, efficiency, and reliability. At ATOMIC-SHOP, we offer a comprehensive selection of engine parts, including spark plugs, radiators, gaskets, bolts, and more, all designed to enhance your engine's performance and durability. Whether you're upgrading a daily driver or building a race car, our motor components are engineered to meet the demands of both street and track applications.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eSpark Plugs: High-performance spark plugs are critical for ensuring efficient combustion and maximizing horsepower. Our selection includes options for various engine types, providing reliable ignition and consistent performance under extreme conditions.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eRadiators: Efficient cooling is essential for maintaining engine performance, especially under high stress. Our radiators are designed to provide superior heat dissipation, keeping your engine cool even in the most demanding environments.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eGaskets \u0026amp; Seals: Prevent leaks and maintain engine integrity with our premium gaskets and seals. These components are designed to provide a perfect seal, ensuring that your engine operates efficiently and reliably.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eBolts \u0026amp; Studs: Upgrade your engine's fasteners with high-strength bolts and studs. These components are essential for maintaining engine integrity under high pressure and temperature, ensuring that all parts stay securely in place.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eBelts: Reliable belts are crucial for the proper operation of various engine systems. Our high-quality belts are designed to withstand wear and tear, providing long-lasting performance and reducing the risk of failure.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003ePulleys \u0026amp; Gears: Precision-engineered pulleys and gears ensure smooth and efficient power transfer within your engine. Our selection includes components designed to optimize performance and durability.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eEngine Mounts: Engine mounts play a vital role in minimizing vibrations and securing the engine in place. Our durable mounts are designed to absorb shocks and ensure a stable engine position, enhancing driving comfort and engine longevity.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eHeat Protection: Protect your engine and its components from excessive heat with our advanced heat protection solutions. These products help prevent heat-related damage, extending the life of your engine and its parts.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eAt ATOMIC-SHOP, we understand that every component in your engine plays a critical role in its overall performance. That’s why we offer only the best motor components from trusted manufacturers, ensuring that each part meets the highest standards of quality and reliability. Our expert team is here to help you choose the right components for your specific needs, providing the advice and support necessary to achieve the best results from your engine build.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eExplore our range of motor components today and discover how upgrading these essential parts can enhance your engine's power, efficiency, and longevity. With ATOMIC-SHOP, you're not just maintaining your engine — you're investing in the performance and reliability that will keep your vehicle at its best.\u003c\/p\u003e\n","products":[{"product_id":"aem-23-831bk-tru-time-adjustable-cam-gears-for-mitsubishi-evo-black","title":"AEM 23-831BK Tru-Time Adjustable Cam Gears for MITSUBISHI EVO black","description":"\u003ch1\u003e\u003cstrong\u003eTru-Time Adjustable Cam Gears\u003c\/strong\u003e\u003c\/h1\u003e\u003cdiv\u003eAEM Tru-Time Adjustable Camshaft Gears increase horsepower and torque without having to change the camshaft(s) and are must-have items for engines that are milled, forced induction, high compression and\/or utilizing aftermarket competition cams. AEM Tru-Time cam gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile(s) in one-degree increments via true laser-etched markings. Precision-cut gear teeth ensure no premature wearing of the cam gear's belt surface and AEM's anodizing on the adjustable cam gear's teeth is lab-test proven as the hardest anodizing process on the market.\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003ch3\u003eFeatures:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eIncrease horsepower and torque without any cam changes and are ideal for heavily modified engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGrade-8, six-point hex bolts stand up to repeated adjustments and feature an integral washer flange for greater load distribution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTrue laser-etched markings on the leading edge of the gear allow for quick, accurate adjustments\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCNC-machined from 6061-T6 billet aluminum\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBelt surface is hard anodized\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRecommended cam gear settings included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufactured and assembled in the USA\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AEM","offers":[{"title":"Default Title","offer_id":43441951965364,"sku":"23-831BK","price":271.31,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/10227_jOCl_AEM23-831BK-1.jpg?v=1773031825"},{"product_id":"aem-23-802bk-tru-time-adjustable-cam-gears-for-honda-acura-b16-b18-black","title":"AEM 23-802BK Tru-Time Adjustable Cam Gears for HONDA \/ ACURA B16 \/ B18 black","description":"","brand":"AEM","offers":[{"title":"Default Title","offer_id":43441951899828,"sku":"23-802BK","price":179.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/ekUuuumm_23-802BK.jpg?v=1773031824"},{"product_id":"ard-150017-gold-thermo-slevee-200mm-x50mm","title":"ARD 150017 Gold thermo slevee 200mm x50mm","description":"","brand":"ARD","offers":[{"title":"Default Title","offer_id":43655585431732,"sku":"150017","price":15.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/105058_Au0f_heat_d74a3179-1c13-495b-b467-16c5a78c7908.jpg?v=1729002643"},{"product_id":"ard-150028-silicone-heat-sleeve-30mm-1m","title":"ARD 150028 Silicone heat sleeve,30mm, 1m","description":"","brand":"ARD","offers":[{"title":"Default Title","offer_id":43655587791028,"sku":"150028","price":26.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/120923_oxHW_Ard150028_ea34c4c5-fb03-4e67-bddd-bf3a517273a8.jpg?v=1729002696"},{"product_id":"ard-150039-adhesive-titanium-heat-barrier-0-6-mm-x-30-cm-x-30-cm","title":"ARD 150039 Adhesive Titanium Heat Barrier (0.6 mm x 30 cm x 30 cm)","description":"\u003ch2\u003eDescription ARD 150039 Adhesive Titanium Heat Barrier (0.6 mm x 30 cm x 30 cm)\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003eHigh-performance thermal protection. Lightweight. Easy to install.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe \u003cstrong\u003eARD 150039 Adhesive Titanium Heat Barrier\u003c\/strong\u003e is engineered to protect critical components from radiant heat in high-temperature environments. Measuring \u003cstrong\u003e0.6 mm thick and 30 x 30 cm\u003c\/strong\u003e in size, this self-adhesive barrier is ideal for shielding engine bays, firewalls, intake systems, fuel cells, and more.\u003c\/p\u003e \u003cp\u003eConstructed with a titanium outer layer and high-grade insulation backing, it reflects up to \u003cstrong\u003e90% of radiant heat\u003c\/strong\u003e while remaining lightweight and flexible. The adhesive backing allows for quick, clean, and tool-free installation — just peel, position, and press into place.\u003c\/p\u003e \u003ch3\u003eKey Features:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDimensions: 30 cm x 30 cm\u003c\/li\u003e \u003cli\u003eThickness: 0.6 mm\u003c\/li\u003e \u003cli\u003eReflects up to 90% of radiant heat\u003c\/li\u003e \u003cli\u003eTitanium outer layer with thermal insulation backing\u003c\/li\u003e \u003cli\u003eSelf-adhesive — no tools or hardware needed\u003c\/li\u003e \u003cli\u003eIdeal for automotive, motorsport, and industrial applications\u003c\/li\u003e \u003cli\u003eLightweight and flexible — conforms to curved surfaces\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eProtect heat-sensitive areas with confidence — upgrade to the ARD 150039 Titanium Heat Barrier for reliable, easy-to-apply thermal insulation.\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARD","offers":[{"title":"Default Title","offer_id":43655587659956,"sku":"150039","price":238.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/ard-150039.jpg?v=1748435644"},{"product_id":"ard-150040-adhesive-titanium-heat-barrier-0-6mm-x-30cm-x-60cm","title":"ARD 150040 Adhesive titanium heat barrier, 0.6mm x 30cm x 60cm","description":"\u003cp\u003eARD blankets isolate the heat generated by your turbocharger to reduce turbo lag, lower intake air temperature, protect and prolong vital components under the hood (reduce heat under the hood by up to 60%), and increase power. \u003c\/p\u003e\u003cp\u003eblankets consist of an outer layer of crushed volcanic lava (nominal 1800 ° F direct heat \/ 2500 ° F radiated heat) formed into fabric and woven into a tight mesh weave. Calcium magnesium silicate wool (rated continuous temperature 1832 ° F \/ peak 2300 ° F) covered.\u003cbr\u003eARD blankets are designed to withstand the harshest conditions.\u003c\/p\u003e","brand":"ARD","offers":[{"title":"Default Title","offer_id":43655587233972,"sku":"150040","price":17.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/120938_0LRF_Ard150040_bc30eb2f-f4a1-416a-aedb-79e3ee3ce188.jpg?v=1729002687"},{"product_id":"ard-060011-radiator-silicone-hose-kit-for-nissan-gt-r-r35","title":"ARD 060011 Radiator Silicone Hose Kit for NISSAN GT-R (R35)","description":"\u003ch2\u003eDescription ARD 060011 Radiator Silicone Hose Kit for NISSAN GT-R (R35)\u003c\/h2\u003e \u003cp\u003e\u003cstrong\u003eEnhanced cooling. Maximum durability. Designed for performance.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe \u003cstrong\u003eARD 060011 Radiator Silicone Hose Kit\u003c\/strong\u003e is engineered to withstand the extreme conditions of high-performance driving. Designed specifically for the \u003cstrong\u003eNISSAN GT-R R35\u003c\/strong\u003e, this kit replaces the stock rubber hoses with high-strength, multi-layer silicone hoses that offer superior heat resistance, pressure tolerance, and long-term reliability.\u003c\/p\u003e \u003cp\u003ePerfect for street, track, or tuned GT-R builds, this upgrade improves coolant flow and reduces the risk of hose expansion or failure under boost and heat.\u003c\/p\u003e \u003ch3\u003eFeatures:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVehicle compatibility: NISSAN GT-R R35\u003c\/li\u003e \u003cli\u003eMade from multi-layer reinforced silicone\u003c\/li\u003e \u003cli\u003eHigh heat and pressure resistance\u003c\/li\u003e \u003cli\u003eImproved coolant circulation and reliability\u003c\/li\u003e \u003cli\u003eDirect OEM replacement – easy installation\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKeep your GT-R running cool under pressure — upgrade to ARD silicone hoses for long-lasting performance and peace of mind.\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARD","offers":[{"title":"Default Title","offer_id":43655592444084,"sku":"060011","price":214.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/ard-060011.jpg?v=1748526170"},{"product_id":"arp-102-4701-head-stud-kit-for-nissan-2-0l-sr20de-1991-2001-m11","title":"ARP 102-4701 Head Stud Kit for NISSAN 2.0L SR20DE 1991-2001 M11","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black oxide\u003cbr\u003e Material: ARP2000\u003cbr\u003e Quantity: Kit\u003cbr\u003e Thread Size: M11\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/102-4701.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Nissan SR20\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cbr\u003e  \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472295231668,"sku":"102-4701","price":285.52,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/102-4701.jpg?v=1774626505"},{"product_id":"arp-107-6002-rod-bolt-kit-for-mitsubishi-4g63-94up-m8","title":"ARP 107-6002 Rod Bolt Kit for MITSUBISHI 4G63 '94up M8","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 hex\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472297853108,"sku":"107-6002","price":52.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/107-6002.jpg?v=1774626406"},{"product_id":"arp-202-4301-head-stud-kit-for-nissan-rb20-rb20det-rb25-rb25det","title":"ARP 202-4301 Head Stud Kit for NISSAN RB20. RB20DET. RB25. RB25DET","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472355885236,"sku":"202-4301","price":258.82,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/202-4301.jpg?v=1774626643"},{"product_id":"arp-202-4701-head-stud-kit-for-nissan-vq35-12pt","title":"ARP 202-4701 Head Stud Kit for NISSAN VQ35 12pt","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service.\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/202-4701.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Nissan VQ35\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472356180148,"sku":"202-4701","price":350.47,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/202-4701_1.jpg?v=1774626645"},{"product_id":"arp-202-4303-head-stud-kit-for-nissan-2-0l-sr20det-rn14-dohc-turbo-1991-94-m12","title":"ARP 202-4303 Head Stud Kit for NISSAN 2.0L SR20DET\/RN14 DOHC Turbo 1991-94 M12","description":"\u003cp\u003ePro Series 12 Point Cylinder Head Stud Kit by ARP®. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and meet the ARP \"ZERO defect - ZERO failure\" quality standard. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more \"stretch\" to compensate for the additional compression of gaskets. \u003c\/p\u003e \u003cp\u003eSpecifications:\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e Finish: Black oxide\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003cbr\u003e Thread Size: M12\u003cbr\u003e Socket Size(s): 14mm 12pt, 5mm Allen\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e Features:\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service.\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/202-4303.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Nissan SR20\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472357064884,"sku":"202-4303","price":196.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/202-4303_1.jpg?v=1774626644"},{"product_id":"arp-202-5402-main-stud-kit-for-nissan-sr20det","title":"ARP 202-5402 Main Stud Kit for NISSAN SR20DET","description":"\u003cp\u003eThere are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200, 000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eMaterial: 8740 Chromoly\u003cbr\u003e Kit Type: Stud\u003cbr\u003e Main Bolt Style: 2-Bolt\u003cbr\u003e Finish: Black\u003cbr\u003e Quantity: Kit\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed and manufactured using innovative technologies\u003cbr\u003e Made with maximum safety and reliability in mind\u003cbr\u003e Expected to provide seamless service for years.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/202-5402.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Nissan SR20\u003c\/strong\u003e\u003cbr\u003e  \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472356376756,"sku":"202-5402","price":185.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/202-5402_1.jpg?v=1774626646"},{"product_id":"arp-202-4207-head-stud-kit-for-nissan-gt-r-rb26dett","title":"ARP 202-4207 Head Stud Kit for NISSAN GT-R RB26DETT","description":"\u003ch2\u003eDescription ARP 202-4207 Head Stud Kit for NISSAN GT-R RB26DETT\u003c\/h2\u003e \u003cp\u003eARP studs and bolts are made from 8740 steel alloy designed for use in aviation and space applications. To achieve the highest quality, each element is machined and hardened in a vertical rack at a high pressure of 190,000psi.\u003c\/p\u003e \u003cp\u003eThanks to special machining (notching), each ARP stud is made as straight as possible. The threads are applied after hardening, which provides better resistance to wear and metal fatigue than conventional threading before heat treatment.\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472354738356,"sku":"202-4207","price":417.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-202-4207-head-stud-kit-for-nissan-gt-r-rb26dett-01.jpg?v=1774626642"},{"product_id":"arp-207-4201-head-stud-kit-for-mitsubishi-2-0l-4-cylinder-16v","title":"ARP 207-4201 Head Stud Kit for Mitsubishi 2.0L 4-cylinder 16V","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e14mm 12pt, 5mm Allen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472361717940,"sku":"207-4201","price":165.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/207-4201.jpg?v=1771836696"},{"product_id":"arp-203-5404-main-stud-kit-for-toyota-3sgte","title":"ARP 203-5404 Main Stud Kit for TOYOTA 3SGTE","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eMaterial: 8740 Chromoly\u003cbr\u003e Kit Type: Stud\u003cbr\u003e Main Bolt Style: 2-Bolt\u003cbr\u003e Finish: Black\u003cbr\u003e Quantity: Kit\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/203-5404.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472358310068,"sku":"203-5404","price":172.73,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/203-5404_1.jpg?v=1774626723"},{"product_id":"arp-207-4203-head-stud-kit-for-mitsubishi-4g63","title":"ARP 207-4203 Head Stud Kit for MITSUBISHI 4G63","description":"\u003cp\u003ePro Series 12 Point Cylinder Head Stud Kit by ARP. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFinish: Black\u003c\/li\u003e \u003cli\u003eMaterial: 8740 Chrome Moly\u003c\/li\u003e \u003cli\u003eQuantity: Kit\u003c\/li\u003e \u003cli\u003eSocket Size(s): 1\/2 12pt, 3\/16 Allen\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Black","offer_id":43714155741364,"sku":"207-4203","price":206.23,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-207-4203-1.jpg?v=1771836697"},{"product_id":"arp-203-4204-head-stud-kit-for-3-s-gte-toyota-12pt","title":"ARP 203-4204 Head Stud Kit for 3 S GTE TOYOTA 12pt","description":"\u003cp\u003eARP 203-4204 - ARP Toyota 3 SGTE 2.0L DOHC 12 Pt. Head Stud Kit.\u003c\/p\u003e \u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service more details on - https:\/\/www.carid.com\/arp\/pro-series-12-point-cylinder-head-stud-kit-mpn-203-4204.html\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/203-4204.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines:Toyota 3 S GTE\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472356343988,"sku":"203-4204","price":254.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/203-4204_1_d592467f-9503-470e-af33-c065a4ba43c9.jpg?v=1774626677"},{"product_id":"arp-207-5401-main-stud-kit-for-mitsubishi-evo-2-0-16v-4g63","title":"ARP 207-5401 Main Stud Kit for MITSUBISHI EVO 2.0 16V (4G63)","description":"\u003ch2\u003eDescription ARP 207-5401 Main Stud Kit for MITSUBISHI EVO 2.0 16V (4G63)\u003c\/h2\u003e \u003cp\u003eThe ARP main stud kit is designed to provide superior engine block stability by securely fastening the main caps under high load conditions. By replacing standard bolts with high-strength studs, it helps eliminate main cap walk and fretting while protecting the threads in the engine block.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 chrome moly steel construction for high strength and durability\u003c\/li\u003e \u003cli\u003eHeat-treated to 190,000 psi tensile strength\u003c\/li\u003e \u003cli\u003eReduces main cap walk and prevents fretting\u003c\/li\u003e \u003cli\u003eProtects engine block threads from wear and damage\u003c\/li\u003e \u003cli\u003ePrecision rolled J-form threads for increased strength\u003c\/li\u003e \u003cli\u003eIncludes hardened parallel-ground washers and high-quality nuts\u003c\/li\u003e \u003cli\u003eOptional windage tray mounting with standoff studs and serrated lock nuts\u003c\/li\u003e \u003cli\u003eImproves engine stability under high load conditions\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Black","offer_id":43737753157812,"sku":"207-5401","price":113.88,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-207-5401-1_f1a5eef8-1d2d-42e6-a8d5-72c82b302ce7.jpg?v=1774620112"},{"product_id":"arp-207-4702-head-stud-kit-for-mitsubishi-4g63-m11","title":"ARP 207-4702 Head Stud Kit for Mitsubishi 4G63 M11","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit \u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/207-4702.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: MITSUBISHI 4G63\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472365912244,"sku":"207-4702","price":227.4,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/207-4702_1.jpg?v=1771836700"},{"product_id":"arp-207-4206-head-stud-kit-for-mitsubishi-evo-x-4b11","title":"ARP 207-4206 Head Stud Kit for MITSUBISHI EVO X (4B11)","description":"\u003ch2\u003eDescription ARP 207-4206 Head Stud Kit for MITSUBISHI EVO X (4B11)\u003c\/h2\u003e \u003cp\u003ePro Series 12 Point Cylinder Head Stud Kit (207-4206) by ARP. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and meet the ARP \"ZERO defect - ZERO failure\" quality standard. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFinish: Black\u003c\/li\u003e \u003cli\u003eMaterial: ARP2000\u003c\/li\u003e \u003cli\u003eQuantity: Kit\u003c\/li\u003e \u003cli\u003eSocket Size(s): 1\/2 12pt, 3\/16 Allen\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Black","offer_id":43737753190580,"sku":"207-4206","price":285.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-207-4206-1.jpg?v=1774617516"},{"product_id":"arp-218-4702-head-stud-kit-for-mazda-03-2-3l-dohc-16v","title":"ARP 218-4702 Head Stud Kit for Mazda '03 2.3L DOHC 16V","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/218-4702.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Mazda L3KG, 2.3L DOHC 16V\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472365027508,"sku":"218-4702","price":261.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/218-4702_1.jpg?v=1771836726"},{"product_id":"arp-260-6302-rod-bolt-kit-for-subaru-ej25-dohc-turbo","title":"ARP 260-6302 Rod Bolt Kit for Subaru EJ25 DOHC turbo","description":"\u003cp\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005?. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/p\u003e \u003cp\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/p\u003e \u003cp\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged in-house at ARP using only the finest quality materials\u003c\/li\u003e \u003cli\u003eHeat-treated using special vertical racks to assure complete 360° penetration\u003c\/li\u003e \u003cli\u003eThreads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/li\u003e \u003cli\u003ePrecision CNC-machined to exacting specifications\u003c\/li\u003e \u003cli\u003eSpecially designed for optimum reliability in each application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWave-Loc Features:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/li\u003e \u003cli\u003eProvides snug fit for all OEM connecting rods (interference range of .001? to .005?), despite wide range of factory rod bolt hole tolerances.\u003c\/li\u003e \u003cli\u003eAvailable for most applications.\u003c\/li\u003e \u003cli\u003eSuperior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/li\u003e \u003cli\u003eGalling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eMaterials Used In ARP Connecting Rod Bolts:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180, 000 and 210, 000 psi.\u003c\/li\u003e \u003cli\u003eAERMET: With a typical tensile strength of 290, 000-310, 000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220, 000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/li\u003e \u003cli\u003eL19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260, 000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eINCONEL 718: A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210, 000-230, 000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/li\u003e \u003cli\u003eARP3.5 (AMS5844): While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260, 000-280, 000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/li\u003e \u003cli\u003eCUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260, 000-280, 000 psi.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e11mm 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFastener Style: Bolt\u003cbr\u003e Finish: Natural\u003cbr\u003e Material: ARP 2000\u003cbr\u003e Quantity: Set of 8\u003cbr\u003e Stretch: 0.0070\"-0.0075\"\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Forged in-house at ARP using only the finest quality materials\u003cbr\u003e Heat-treated using special vertical racks to assure complete 360° penetration\u003cbr\u003e Threads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003cbr\u003e Precision CNC-machined to exacting specifications\u003cbr\u003e Specially designed for optimum reliability in each application.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/260-6302.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003eF\u003cstrong\u003eits Following Engines: EJ25 DOHC turbo\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472388587700,"sku":"260-6302","price":136.08,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/260-6302.jpg?v=1771836667"},{"product_id":"arp-207-4701-head-stud-kit-for-mitsubishi-4g63-m12","title":"ARP 207-4701 Head Stud Kit for Mitsubishi 4G63 M12","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e14mm 12pt, 5mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit \u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/207-4701.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: MITSUBISHI 4G63\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472363487412,"sku":"207-4701","price":208.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/207-4701.jpg?v=1771836699"},{"product_id":"arp-200-6209-replacement-rod-bolt-kit-3-8-8-piece-set","title":"ARP 200-6209 Replacement Rod Bolt Kit 3\/8? 8 - piece set","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial\u003c\/td\u003e \u003ctd\u003eARP2000\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e1) Thread Size\u003c\/td\u003e \u003ctd\u003e3\/8˝\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e2) UHL\u003c\/td\u003e \u003ctd\u003e1.600˝\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e3) Thread Length\u003c\/td\u003e \u003ctd\u003e0.600˝\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e4) Grip Length\u003c\/td\u003e \u003ctd\u003e0.145˝\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e5) Head Height\u003c\/td\u003e \u003ctd\u003e0.388˝\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e6) Socket Size\u003c\/td\u003e \u003ctd\u003e7\/16 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e7) Collar Dia.\u003c\/td\u003e \u003ctd\u003e0.555˝\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/arp-bolts.com\/i\/rrb-drawing.jpg\"\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKit Instructions:\u003c\/strong\u003e We provide the stretch and torque values below as a general guide. Please contact the rod manufacturer using the chart below for the exact values for your bolt and rod combination. Rod Bolt stretch and torque values for aftermarket rods are determined by the rod manufacturer. If they provide any information online, we have linked directly to it with the Website link.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eStretch \u0026amp; Torque Values\u003c\/strong\u003e\u003cbr\u003e Stretch: 0.0055 - 0.0060 in.\u003cbr\u003e Bolt Torque Value: 55 ft-lbs (75 Nm) with ARP Ultra-Torque Fastener Assembly Lubricant\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472336453812,"sku":"200-6209","price":109.21,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/200-6209.jpg?v=1774626692"},{"product_id":"arp-104-6006-rod-bolt-kit-for-porsche-type-iv-1-7l","title":"ARP 104-6006 Rod Bolt Kit for PORSCHE Type IV. 1.7L","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e11mm 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472293298356,"sku":"104-6006","price":237.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/104-6006.jpg?v=1774626407"},{"product_id":"arp-260-5401-case-bolt-kit-for-subaru-ej20-ej25","title":"ARP 260-5401 Case Bolt Kit for SUBARU EJ20 \/ EJ25","description":"\u003cp\u003e12-Point Case Bolt Kit by ARP. Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced wrenching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating. The popular High Performance Series is rated at 180,000 psi, and is a premium replacement for OEM fasteners. Pro Series main bolts are application-specific, rated at 200,000 psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit. \u003c\/p\u003e \u003cul\u003e \u003cli\u003eFastener Style: Bolt\u003c\/li\u003e \u003cli\u003ePackage Type: Box\u003c\/li\u003e \u003cli\u003eFinish: Natural\/Polished\u003c\/li\u003e \u003cli\u003eMaterial: Inconel\/Stainless Steel\u003c\/li\u003e \u003cli\u003eHead Type: 12 Point\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43622319816884,"sku":"260-5401","price":638.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-260-5401-2.jpg?v=1771836753"},{"product_id":"arp-218-5402-main-stud-kit-for-mazda-03-2-3l-dohc-16v","title":"ARP 218-5402 Main Stud Kit for Mazda '03 2.3L DOHC 16V","description":"\u003cp\u003eThere are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200, 000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eMaterial: 8740 Chromoly\u003cbr\u003e Kit Type: Stud\u003cbr\u003e Main Bolt Style: 2-Bolt\u003cbr\u003e Finish: Black\u003cbr\u003e Quantity: Kit\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed and manufactured using innovative technologies\u003cbr\u003e Made with maximum safety and reliability in mind\u003cbr\u003e Expected to provide seamless service for years.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/218-5402.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: Mazda L3KG, 2.3L DOHC 16V\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472365519028,"sku":"218-5402","price":183.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/218-5402_1.jpg?v=1771836726"},{"product_id":"arp-107-6001-rod-bolt-kit-for-mitsubishi-4g63-pre-94-m9","title":"ARP 107-6001 Rod Bolt Kit for MITSUBISHI 4G63 Pre '94 M9","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 hex\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472296280244,"sku":"107-6001","price":65.52,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/107-6001.jpg?v=1774626407"},{"product_id":"arp-109-6002-rod-bolt-kit-for-opel-vauxhall-1-4l-1-6l-m8-8v","title":"ARP 109-6002 Rod Bolt Kit for OPEL\/VAUXHALL 1.4L \u0026 1.6L. M8. 8V","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e3\/8 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472298049716,"sku":"109-6002","price":120.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/109-6002.jpg?v=1774626410"},{"product_id":"arp-260-4701-head-stud-kit-for-subaru-ej20-ej25","title":"ARP 260-4701 Head Stud Kit for SUBARU EJ20 \/ EJ25","description":"\u003ch2\u003eDescription ARP 260-4701 Head Stud Kit for SUBARU EJ20 \/ EJ25\u003c\/h2\u003e \u003cp\u003ePro Series 12 Point Undercut Cylinder Head Stud Kit by ARP. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFinish: Black\u003c\/li\u003e \u003cli\u003eMaterial: ARP2000\u003c\/li\u003e \u003cli\u003eQuantity: Kit\u003c\/li\u003e \u003cli\u003eSocket Size(s): 9\/16 12pt, 3\/16 Allen\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Black","offer_id":43737754730676,"sku":"260-4701","price":413.22,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-260-4701-head-stud-kit-for-subaru-ej20-ej25-01.jpg?v=1771836752"},{"product_id":"arp-109-6003-rod-bolt-kit-for-opel-vauxhall-1-4l-m9-16v","title":"ARP 109-6003 Rod Bolt Kit for OPEL\/VAUXHALL 1.4L. M9. 16V","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e10mm 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472296476852,"sku":"109-6003","price":91.98,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/109-6003_1.jpg?v=1774626412"},{"product_id":"arp-151-6003-rod-bolt-kit-for-ford-zetec-1-6l","title":"ARP 151-6003 Rod Bolt Kit for FORD Zetec 1.6L","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e3\/8 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472317677748,"sku":"151-6003","price":110.91,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/151-6003.jpg?v=1774626468"},{"product_id":"arp-203-5001-main-bolt-kit-for-toyota-1600cc","title":"ARP 203-5001 Main Bolt Kit for TOYOTA 1600cc","description":"\u003cp\u003eFar superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180, 000 psi, is a premium replacement for OEM fasteners, or the 200, 000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFastener Style: Bolt\u003cbr\u003e PackageType: Box\u003cbr\u003e Finish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSupported Vehicles:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eToyota\u003cbr\u003e Corolla 1983-1991, 1996-2000 \u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472357916852,"sku":"203-5001","price":74.62,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/203-5001.jpg?v=1774626724"},{"product_id":"arp-208-4601-head-stud-kit-for-honda-acura-b16a","title":"ARP 208-4601 Head Stud Kit for Honda\/Acura B16A","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit \u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/208-4601.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSupported Vehicles:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eHonda\u003cbr\u003e Civic 1994-1995, 1999-2000\u003cbr\u003e Civic Si 1996-1997\u003cbr\u003e Del Sol 1994-1997 \u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472363356340,"sku":"208-4601","price":242.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/208-4601_1.jpg?v=1771836728"},{"product_id":"arp-208-4701-head-stud-kit-for-honda-acura-k20a-a2-a3","title":"ARP 208-4701 Head Stud Kit for Honda\/Acura K20A (A2 \u0026 A3)","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1\/2 12pt, 3\/16 Allen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472363323572,"sku":"208-4701","price":252.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/208-4701.jpg?v=1771836728"},{"product_id":"arp-151-6004-rod-bolt-kit-for-ford-cvh-m8-x-1-0","title":"ARP 151-6004 Rod Bolt Kit for FORD CVH M8 x 1.0","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e3\/8 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472318529716,"sku":"151-6004","price":101.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/151-6004.jpg?v=1774626470"},{"product_id":"arp-109-6001-rod-bolt-kit-for-opel-vauxhall-2-0l-m9-16v","title":"ARP 109-6001 Rod Bolt Kit for OPEL\/VAUXHALL 2.0L. M9. 16V","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e7\/16 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472295755956,"sku":"109-6001","price":101.91,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/109-6001.jpg?v=1774626410"},{"product_id":"arp-107-6003-rod-bolt-kit-for-mitsubishi-2-6l","title":"ARP 107-6003 Rod Bolt Kit for MITSUBISHI 2.6L","description":"\u003cp\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005?. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/p\u003e \u003cp\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/p\u003e \u003cp\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged in-house at ARP using only the finest quality materials\u003c\/li\u003e \u003cli\u003eHeat-treated using special vertical racks to assure complete 360° penetration\u003c\/li\u003e \u003cli\u003eThreads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/li\u003e \u003cli\u003ePrecision CNC-machined to exacting specifications\u003c\/li\u003e \u003cli\u003eSpecially designed for optimum reliability in each application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWave-Loc Features:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/li\u003e \u003cli\u003eProvides snug fit for all OEM connecting rods (interference range of .001? to .005?), despite wide range of factory rod bolt hole tolerances.\u003c\/li\u003e \u003cli\u003eAvailable for most applications.\u003c\/li\u003e \u003cli\u003eSuperior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/li\u003e \u003cli\u003eGalling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eMaterials Used In ARP Connecting Rod Bolts:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180, 000 and 210, 000 psi.\u003c\/li\u003e \u003cli\u003eAERMET: With a typical tensile strength of 290, 000-310, 000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220, 000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/li\u003e \u003cli\u003eL19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260, 000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eINCONEL 718: A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210, 000-230, 000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/li\u003e \u003cli\u003eARP3.5 (AMS5844): While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260, 000-280, 000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/li\u003e \u003cli\u003eCUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260, 000-280, 000 psi.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 hex\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/107-6003.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines:: MITSUBISHI 2.6L (G54B) 4-CYL\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472299524276,"sku":"107-6003","price":70.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/107-6003.jpg?v=1774626409"},{"product_id":"arp-201-4303-head-stud-kit-for-bmw-3-2l-s54-inline-6","title":"ARP 201-4303 Head Stud Kit for BMW 3.2L (S54) inline 6","description":"\u003ch2\u003eDescription ARP 201-4303 Cylinder Head Stud Kit for BMW 3.2L (S54) inline 6\u003c\/h2\u003e \u003cp\u003eHigh-strength cylinder head stud kit designed for BMW S54 3.2L engines, suitable for tuning and reinforced engines.\u003c\/p\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e BMW E46 M3, Z3 M, Z4 M with S54 engine\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ARP2000 alloy with increased strength\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeat treatment\u003c\/strong\u003e: Improved strength and fatigue resistance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHeads:\u003c\/strong\u003e 12-sided nuts for secure fastening\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black oxidation for corrosion protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eContents:\u003c\/strong\u003e Studs, 12-sided nuts, hardened washers\u003c\/li\u003e \u003c\/ul\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472355000500,"sku":"201-4303","price":337.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/arp-201-4303-head-stud-kit-for-bmw-3-2l-s54-inline-6-01.jpg?v=1774626614"},{"product_id":"arp-107-6004-rod-bolt-kit-for-mitsubishi-3-0l-3-5l-v6","title":"ARP 107-6004 Rod Bolt Kit for MITSUBISHI 3.0L \u0026 3.5L V6","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e1\/2 hex\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472297984180,"sku":"107-6004","price":103.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/107-6004.jpg?v=1774626409"},{"product_id":"arp-126-6101-rod-bolt-kit-for-alfa-romeo-2-0l-gtv","title":"ARP 126-6101 Rod Bolt Kit for ALFA ROMEO 2.0L GTV","description":"\u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFastener Style: Bolt\u003cbr\u003e Finish: Black\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Set of 8 \u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/126-6101.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSupported Vehicles:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAlfa Romeo\u003cbr\u003e GTV 1995-2005 \u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472300015796,"sku":"126-6101","price":189.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/126-6101_1.jpg?v=1774626472"},{"product_id":"arp-117-6101-rod-bolt-kit-for-peugeot-306","title":"ARP 117-6101 Rod Bolt Kit for PEUGEOT 306","description":"\u003cp\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005?. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/p\u003e \u003cp\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/p\u003e \u003cp\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged in-house at ARP using only the finest quality materials\u003c\/li\u003e \u003cli\u003eHeat-treated using special vertical racks to assure complete 360° penetration\u003c\/li\u003e \u003cli\u003eThreads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/li\u003e \u003cli\u003ePrecision CNC-machined to exacting specifications\u003c\/li\u003e \u003cli\u003eSpecially designed for optimum reliability in each application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWave-Loc Features:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/li\u003e \u003cli\u003eProvides snug fit for all OEM connecting rods (interference range of .001? to .005?), despite wide range of factory rod bolt hole tolerances.\u003c\/li\u003e \u003cli\u003eAvailable for most applications.\u003c\/li\u003e \u003cli\u003eSuperior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/li\u003e \u003cli\u003eGalling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eMaterials Used In ARP Connecting Rod Bolts:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180, 000 and 210, 000 psi.\u003c\/li\u003e \u003cli\u003eAERMET: With a typical tensile strength of 290, 000-310, 000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220, 000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/li\u003e \u003cli\u003eL19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260, 000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eINCONEL 718: A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210, 000-230, 000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/li\u003e \u003cli\u003eARP3.5 (AMS5844): While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260, 000-280, 000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/li\u003e \u003cli\u003eCUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260, 000-280, 000 psi.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e11mm 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/117-6101.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472299720884,"sku":"117-6101","price":153.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/117-6101.jpg?v=1774626438"},{"product_id":"arp-201-6104-rod-bolt-kit-for-bmw-2-3l-s14-m11-43mm-uhl","title":"ARP 201-6104 Rod Bolt Kit for BMW 2.3L (S14). M11. 43mm UHL","description":"\u003cp\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005?. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/p\u003e \u003cp\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/p\u003e \u003cp\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged in-house at ARP using only the finest quality materials\u003c\/li\u003e \u003cli\u003eHeat-treated using special vertical racks to assure complete 360° penetration\u003c\/li\u003e \u003cli\u003eThreads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/li\u003e \u003cli\u003ePrecision CNC-machined to exacting specifications\u003c\/li\u003e \u003cli\u003eSpecially designed for optimum reliability in each application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWave-Loc Features:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/li\u003e \u003cli\u003eProvides snug fit for all OEM connecting rods (interference range of .001? to .005?), despite wide range of factory rod bolt hole tolerances.\u003c\/li\u003e \u003cli\u003eAvailable for most applications.\u003c\/li\u003e \u003cli\u003eSuperior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/li\u003e \u003cli\u003eGalling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eMaterials Used In ARP Connecting Rod Bolts:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180, 000 and 210, 000 psi.\u003c\/li\u003e \u003cli\u003eAERMET: With a typical tensile strength of 290, 000-310, 000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220, 000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/li\u003e \u003cli\u003eL19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260, 000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eINCONEL 718: A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210, 000-230, 000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/li\u003e \u003cli\u003eARP3.5 (AMS5844): While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260, 000-280, 000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/li\u003e \u003cli\u003eCUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260, 000-280, 000 psi.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e \u003cp\u003e12mm 12pt\u003c\/p\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eFastener Style: Bolt\u003cbr\u003e Finish: Natural\u003cbr\u003e Material: ARP 2000\u003cbr\u003e Quantity: Set of 8\u003cbr\u003e Thread Size: M11\u003cbr\u003e Underhead Length (mm) : 43mm\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Forged in-house at ARP using only the finest quality materials\u003cbr\u003e Heat-treated using special vertical racks to assure complete 360° penetration\u003cbr\u003e Threads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003cbr\u003e Precision CNC-machined to exacting specifications\u003cbr\u003e Specially designed for optimum reliability in each application \u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/201-6104.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: BMW 2.3L (S14)\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472355131572,"sku":"201-6104","price":191.03,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/201-6104_1.jpg?v=1774626649"},{"product_id":"arp-201-4601-head-stud-kit-for-bmw-1-5l-2-0l-m10-4-cylinder","title":"ARP 201-4601 Head Stud Kit for BMW 1.5L \u0026 2.0L (M10) 4-cylinder","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e14mm 12pt, 5mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black oxide\u003cbr\u003e Material: 8740 Chrome Moly\u003cbr\u003e Quantity: Kit\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service more details on - https:\/\/www.carid.com\/arp\/pro-series-12-point-undercut-cylinder-head-stud-kit-mpn-201-4601.html\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/201-4601.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines:BMW 1.5L \u0026amp; 2.0L (M10)\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472354803892,"sku":"201-4601","price":267.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/201-4601_1.jpg?v=1774626614"},{"product_id":"arp-118-6401-rod-bolt-kit-for-mazda-miata-88-05","title":"ARP 118-6401 Rod Bolt Kit for MAZDA Miata '88-'05","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e11mm 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472298115252,"sku":"118-6401","price":129.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/118-6401.jpg?v=1774626439"},{"product_id":"arp-151-6005-rod-bolt-kit-for-ford-zetec-2-0l-m9","title":"ARP 151-6005 Rod Bolt Kit for FORD Zetec 2.0L M9","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e7\/16 12pt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472319545524,"sku":"151-6005","price":94.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/151-6005.jpg?v=1774626470"},{"product_id":"arp-202-4203-head-stud-kit-for-datsun-a-14-12pt","title":"ARP 202-4203 Head Stud Kit for Datsun A-14 12pt","description":"\u003ctable width=\"400\" border=\"1\" cellpadding=\"6\"\u003e\u003ctbody\u003e\n\u003ctr bgcolor=\"#CCCCCC\"\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"75%\"\u003eSocket Size(s)\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472355229876,"sku":"202-4203","price":178.26,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/202-4203.jpg?v=1774626653"},{"product_id":"arp-201-6301-rod-bolt-kit-for-bmw-2-5l-m50-m50tu-inline-6-m9-53mm-uhl-arp2000","title":"ARP 201-6301 Rod Bolt Kit for BMW 2.5L (M50\/M50TU) inline 6. M9. 53mm UHL. ARP2000","description":"\u003cp\u003eA large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. However, it is critically important to monitor the stretch of each bolt and replace it when it has permanently elongated by .0005?. Below you will find an extensive listing of aftermarket connecting rods and replacement bolt specifications.\u003c\/p\u003e \u003cp\u003eIn some instances, you may want to go to an ARP rod bolt made from a better grade of material. This will provide you with improved reliability. However, please understand that when you want bolts made from exotic, super high strength materials, the cost will increase significantly. If you’re on a budget, it’s best to go with the most cost-effective solution. This is typically defined by the loads that are carried by the bolts in terms of piston\/rod weight and the rotational speed of the engine. The most cost effective design is the one in which the bolt strength is just great enough to handle its anticipated load – plus a safety margin for the occasional overloads. Using a material which has far more strength than required is not as cost effective – but will definitely give you an extra margin of safety and longer service life.\u003c\/p\u003e \u003cp\u003eYou should also know that ARP rod bolts are superior to those from other manufacturers. Especially in the area of fatigue strength. Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts. In the chart below, you’ll find a bar chart that graphically shows the difference between ARP Pro Series rod bolts and the fastener made by a leading competitor. It’s easy to see why ARP bolts are superior. As such, it makes good sense to rely on ARP for optimum connecting rod service and reliability. Make the most of your racing budget and rely on ARP rod bolts. You’ll find the ARP name proudly stamped on each bolt as your assurance of quality.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged in-house at ARP using only the finest quality materials\u003c\/li\u003e \u003cli\u003eHeat-treated using special vertical racks to assure complete 360° penetration\u003c\/li\u003e \u003cli\u003eThreads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003c\/li\u003e \u003cli\u003ePrecision CNC-machined to exacting specifications\u003c\/li\u003e \u003cli\u003eSpecially designed for optimum reliability in each application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWave-Loc Features:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eWave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress – which strengthens the rod itself!\u003c\/li\u003e \u003cli\u003eProvides snug fit for all OEM connecting rods (interference range of .001? to .005?), despite wide range of factory rod bolt hole tolerances.\u003c\/li\u003e \u003cli\u003eAvailable for most applications.\u003c\/li\u003e \u003cli\u003eSuperior material grain flow because of patented Wave-Loc surface design as compared to knurled bolts that have sharp edges and “built-in” stress risers.\u003c\/li\u003e \u003cli\u003eGalling and scoring of the rod is virtually eliminated because there is only smooth contact and absolutely no “digging.”\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eMaterials Used In ARP Connecting Rod Bolts:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e8740 CHROME MOLY: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180, 000 and 210, 000 psi.\u003c\/li\u003e \u003cli\u003eAERMET: With a typical tensile strength of 290, 000-310, 000 psi, Aermet is a new martensitic super-alloy that is stronger and less expensive than the super-alloy austenitic materials that follow. Because it is capable of achieving incredibly high clamping loads, it is ideal for short but extreme environments like top fuel, funny car and some short track applications. Although Aermet is a maraging steel that is far superior to other high strength steels in its resistance to stress corrosion, it must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220, 000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.\u003c\/li\u003e \u003cli\u003eL19: This is a premium steel that is processed to deliver superior strength and fatigue properties. L19 is a very high strength material compared to 8740 and ARP2000 and is capable of delivering a clamp load at 260, 000 psi. It is primarily used in short track and drag racing applications where inertia loads exceed the clamping capability of ARP2000. Like most high strength, quench and temper steels – L19 requires special care during manufacturing to avoid hydrogen embrittlement. This material is easily contaminated and subject to stress corrosion. It must be kept well-oiled and not exposed to moisture.\u003c\/li\u003e \u003cli\u003eINCONEL 718: A nickel based material that is in the high temperature, super-alloy class, it is found to be equally suitable in lower temperature applications. This material delivers tensile strengths in the 210, 000-230, 000 psi range and exhibits improved fatigue properties. Best of all, Inconel 718 is completely immune to hydrogen embrittlement and corrosion.\u003c\/li\u003e \u003cli\u003eARP3.5 (AMS5844): While similar to Inconel 718, these superalloys are found in many jet engine and aerospace applications where heat and stress attack the life of critical components. The high cobalt content of this alloy, while expensive, delivers a material with superior fatigue characteristics and typically tensile strength in the 260, 000-280, 000 psi range. The immunity to hydrogen embrittlement and corrosion of these materials is a significant design consideration. These materials are primarily used in connecting rods where extremely high loads, high RPM and endurance are important factors – Formula 1, NASCAR and IRL applications.\u003c\/li\u003e \u003cli\u003eCUSTOM AGE 625 PLUS: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260, 000-280, 000 psi.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e10mm 12pt\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eFastener Style: Bolt\u003cbr\u003e Finish: Natural\u003cbr\u003e Material: ARP 2000\u003cbr\u003e Quantity: Set of 12\u003cbr\u003e Thread Size: M9\u003cbr\u003e Underhead Length (mm) : 53mm\u003c\/p\u003e \u003cp\u003e\u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Forged in-house at ARP using only the finest quality materials\u003cbr\u003e Heat-treated using special vertical racks to assure complete 360° penetration\u003cbr\u003e Threads rolled after heat-treat to provide up to 10-times longer fatigue strength\u003cbr\u003e Precision CNC-machined to exacting specifications\u003cbr\u003e Specially designed for optimum reliability in each application \u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/tech.arp-bolts.com\/instructions\/201-6301.pdf\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: BMW 2.5L (M50\/M50TU)\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472354934964,"sku":"201-6301","price":265.05,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/201-6301_1.jpg?v=1774626650"},{"product_id":"arp-201-4302-head-stud-kit-for-bmw-2-5l-m50-3-0l-s50us-3-2l-s52us-inline-6-arp2000-12pt","title":"ARP 201-4302 Head Stud Kit for BMW 2.5L (M50). 3.0L (S50US) \u0026 3.2L (S52US) inline 6. ARP2000. 12pt","description":"\u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today.\u003c\/p\u003e \u003cp\u003eFor openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200, 000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.\u003c\/p\u003e \u003cp\u003eFollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.\u003c\/p\u003e \u003cp\u003eARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.\u003c\/p\u003e \u003cp\u003eYou will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force – and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!\u003c\/p\u003e \u003cp\u003ePremium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications.\u003c\/p\u003e \u003cp\u003eYou won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.\u003c\/p\u003e \u003cp\u003eClearly, ARP Head Stud\/Bolt Kits are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.\u003c\/p\u003e \u003cp\u003eHIGH PERFORMANCE SERIES: High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180, 000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.\u003c\/p\u003e \u003cp\u003ePRO SERIES: All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200, 000 psi. ARP Pro Series head bolt kits are application specific – designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP “ZERO defect – ZERO failure” quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for the additional compression of gaskets.\u003c\/p\u003e \u003cp\u003eHead Studs vs Bolts: On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car.\u003c\/p\u003e \u003cp\u003eFor most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment.\u003c\/p\u003e \u003cp\u003eStuds also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut.\u003c\/p\u003e \u003cp\u003eIf everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.\u003c\/p\u003e \u003ctable border=\"1\" cellpadding=\"6\" style=\"width:400px\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSocket Size(s)\u003c\/td\u003e \u003ctd\u003e12mm 12pt, 4mm Allen\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eFinish: Black oxide\u003cbr\u003e Material: ARP2000\u003cbr\u003e Quantity: Kit\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e Designed to unlock more performance out of your vehicle\u003cbr\u003e Deliver a reasonable balance of strength and durability\u003cbr\u003e Premium construction built with unmatched quality standards\u003cbr\u003e Ensure smooth, reliable operation and long-lasting service.\u003c\/p\u003e \u003cp\u003e\u003ca data-tabindex-counter=\"1\" data-tabindex-value=\"none\" href=\"https:\/\/tech.arp-bolts.com\/instructions\/201-4302.pdf\" tabindex=\"-1\" target=\"_blank\"\u003e\u003cspan style=\"color:#3498db\"\u003e\u003cstrong\u003eKit Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFits Following Engines: BMW 2.5L (M50), 3.0L (S50US) \u0026amp; 3.2L (S52US)\u003c\/strong\u003e\u003c\/p\u003e ","brand":"ARP","offers":[{"title":"Default Title","offer_id":43472354672820,"sku":"201-4302","price":322.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/201-4302_1.jpg?v=1774626613"}],"url":"https:\/\/atomic-shop.eu\/collections\/motor.oembed?page=235","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - EU","version":"1.0","type":"link"}