Compare Champion Copper Plug Number L78C Spark Plug - 807-1 Part #: 807-1 Line: CHP Champion Copper Plug Number L78C Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 78 Hex Size (mm): 21mm Hex Size (in): 13/16 Inch Preset Gap (in): 0.032 Inch Preset Gap (mm): 0.82mm Thread Reach (in): 0.500 Inch Resistor Plug: No Center Electrode Core Material: Nickel-Copper Alloy Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: L78C Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number CJ7Y Spark Plug - 853-1 Part #: 853-1 Line: CHP Champion Copper Plug Number CJ7Y Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 7 Hex Size (mm): 19mm Hex Size (in): 3/4 Inch Preset Gap (in): 0.017 To 0.023 Inch Thread Reach (in): 0.375 Inch Resistor Plug: No Center Electrode Tip Material: Copper Insulator Height (in): 0.060 Inch Ground Electrode Tip Material: Nickel Service Number: CJ7Y Metallurgy: Copper Show More Show Less