HKS 50003-M40X Spark Plug 8 M12 Photo-0
HKS 50003-M40X Spark Plug 8 M12 Photo-1
HKS 50003-M40X Spark Plug 8 M12 Photo-2

HKS 50003-M40X Spark Plug 8 M12

Sale price€20,66

VAT included. Shipping calculated at checkout

HKSP/N: 50003-M40X GTIN: 4957266720356
In stock
Pickup available at Kelberg Warehouse Usually ready in 24 hours

HKS 50003-M40X Spark Plug 8 M12

Kelberg Warehouse

Pickup available, usually ready in 24 hours

Auf der Struth 4
53539 Kelberg


HKS M-Series Super Fire Racing spark plugs are high performance Iridium plugs designed to handle advanced levels of tuning and provide Improved ignition performance, durability and anti-carbon build-up.

The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in ?colder? heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered. M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load. All spark plugs are sold individually.


  • 0.6mm Iridium Alloy Center Electrode
  • Outer Electrode with Platinum Chip
  • Short Type Outer Electrode (Anti-Vibration)
  • Thermal Edge
  • Prevent Carbon Build Up
  • Heat Range: 8
  • Thread Size: 12mm x 19mm
  • Wrench Size: 21mm