NGK Iridium Spark Plug – SILKR7H8

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

• Shell
• Thread Diameter12mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach26.5mm (1.04″)
• Hex Size5/8″ (16mm)
• Terminal TypeSolid
• Gap.031″ (0.8mm)

• Center Electrode
• MaterialIridium
• TypeFine Wire
• Size0.6mm
• ProjectionExtended Projection

• Ground Electrode
• MaterialPlatinum
• TypeSquare
• ShapeTaper Cut
• Quantity1

• Specifications
• ResistorYes
• Resistor Value5k Ohm
• Heat Range7
• Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.

• Part Information
• BrandNGK/NTK
• Warranty60 Days
• Longevity100k Miles