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.

Hex Size (In):  5/8 Inch

Hex Size (mm):  15.9mm

Thread Size:  14mm Thread Reach (In):  0.75 Inch

Number Of Ground Electrodes:  1

Preset Gap (In):  0.028 To 0.038 Inch

Preset Gap (mm):  0.71mm To 0.97mm

Center Electrode Tip Material:  Nickel Copper Alloy

Heat Range:  63

Insulator Height (In):  0.03 Inch

Seat:  Gasket

Ribbed Core Nose:  No

Center Electrode Diameter (In):  0.078 Inch