For many years NGK Spark Plugs have been firing racing engines throughout the world and has become an icon in the spark plug industry. Every Racing NGK Spark Plug is engineered to withstand severe mechanical and thermal shock associated with high-revving, high-compression engines.
Hex Size: 5/8"
Insulator Height: ISO
Manufacturer Heat Range: 8
Seat Type: Gasket
Thread Diameter: 14mm
Ground Electrode Tip Design: Taper Cut / Trapezoid
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Center Electrode Core Material: Copper Core
Center Electrode Tip Material: Iridium
Gap Size: 0.028in
Ground Electrode Quantity: 1