NGK Racing Spark plugs are designed for use in engines that have been tuned to achieve maximum power under specific racing conditions.
Center Electrode Core Material: Copper Core
Center Electrode Tip Material: Nickel w/ V-groove
Gap Size: 0.020"
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Hex Size: 5/8"
Manufacturer Heat Range: 8
Resistance: Zero ohms
Seat Type: Tapered
Thread Diameter: 0.551"