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NGK Racing Series plugs are engineered to withstand the harshest engine conditions.
At a NGK Heat Range 9 equivalent, these plugs will ensure there is less heat when you are making more power. We highly recommend this plug when running our Tunes!
Here is a good article on Spark Plug basics by NGK.
Fine wire iridium tipped center electrode and platinum tipped ground electrode improve ignitability, increase durability and enhance anti fouling capabilities. Special insulator nose configurations improve throttle response. 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.028" (0.7mm)
Center Electrode
MaterialIridium
TypeFine Wire
Size0.6mm
ProjectionRecessed
Ground Electrode
MaterialPlatinum
TypeSlant
Quantity1
Specifications
ResistorYes
Resistor Value5k Ohm
Heat Range9
Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.
Part Information
BrandNGK/NTK
Warranty60 Days
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