NGK SILZKBR8D8S Spark Plug for BMW N20 / N54 / N55 / S55 / N63 / N63TU / S63 / S63TU Engines

NGK Laser Iridium spark plugs provide superior ignitability and long service life. Fine wire iridium tipped center electrode and fine wire platinum tipped ground electrode ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.

• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs prevent flashover
• Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage

Product specifications

Shell

• Thread Size: 12mm
• Thread Pitch: 1.25mm
• Seat Type: Gasket
• Reach: 26.5mm (1.04")
• Hex Size: 14mm Bi-Hex
• Terminal Type: Solid
• Overall Height: ISO
• Gap: .031" (0.8mm)

Center Electrode

• Material: Iridium
• Type: Fine Wire
• Size: 1.0mm
• Projection: Extended Projection

Ground Electrode

• Material: Platinum
• Type: Standard
• Shape: Taper Cut
• Quantity: 1

Specifications

• Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.
• Heat Range: 8
• Longevity: 100k Miles
• Features: Special Gasket
• Resistor: Yes