NOTE: Plugs are sold in quantities of (4), but billed individually. When ordering please change quantity from (1) to (4).

Champion racing plugs are engineered to help engine builders, weekend racers and street performance enthusiasts optimize engine performance. Enjoy the same spark plugs that go into many professional race cars and trucks.

Manufacturer Heat Range: 57

Pre-Gap Size: 0.065 in; 1.65 mm

Hex Size: 0.625 in; 15.880 mm

Thread Diameter: 0.551 in; 14.000 mm

Center Electrode Tip Material: Nickel Copper Alloy

Electrical Terminal Type: Non-Removable Nut

Insulator Height: 0.05 in

Seat Type: Tapered

Reach: 0.749 in

Ground Electrode Core Material: Nickel Copper Alloy

Resistor Type: No