Compare Champion Copper Plug Number RC7YC Spark Plug - 340 Part #: 340 Line: CHP Champion Copper Plug Number RC7YC Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 7 Hex Size (in): 5/8 Inch Preset Gap (in): 0.035 Inch Preset Gap (mm): 0.89mm Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: RC7YC Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number RC12ECC Spark Plug - 438 Part #: 438 Line: CHP Champion Copper Plug Number RC12ECC Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 12 Hex Size (in): 5/8 Inch Preset Gap (in): 0.035 Inch Preset Gap (mm): 0.9mm Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: RC12ECC Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number RC12MCC4 Spark Plug - 439 Part #: 439 Line: CHP Champion Copper Plug Number RC12MCC4 Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 12 Hex Size (in): 5/8 Inch Preset Gap (in): 0.041 Inch Preset Gap (mm): 1.05mm Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: RC12MCC4 Metallurgy: Copper Show More Show Less