Champion 843 Copper Plus Regulator Non-Resistor Spark Plugs - 1-CJ8 - Box 4

Spark Plug Code: 1-CJ8

Plug Type: CJ8.
Seat Type: Gasket.
Hex Size (Inch): 0.748.
Hex Size (MM): 19.
Thread Size (Inch): 0.551.
Thread Size (MM): 14.
Thread Reach (Inch): 0.375.
Taper Diameter (Inch): 0.25.
Installed Height: 1.45.
Gap (Inch): 0.027-0.033.
Gap (MM): 0.69-0.84.
Center Electrode Diameter (Inch): 0.09.
Center Electrode Material: Nickel Copper Alloy.
Ground Electrode Material: Nickel Copper Alloy.
Classification: Champion Copper Plus.
Resistor Plug: N.

Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance, and longevity of the spark plug. Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression. Patented Ultraseal coated shell for rust prevention.