Compare Champion Copper Plug Number RN2C Spark Plug - 818C Part #: 818C Line: CHP Champion Copper Plug Number RN2C Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 2 Hex Size (in): 13/16 Inch Preset Gap (in): 0.023 To 0.028 Inch Preset Gap (mm): 0.58mm To 0.71mm Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: RN2C Metallurgy: Copper Show More Show Less
Compare Champion Copper Spark Plug - 251 Part #: 251 Line: CHP Champion Copper Spark Plug Manufacturer's Defect Warranty Seat: Tapered Thread Size: M14 Heat Range: 17 Hex Size (in): 5/8 Inch Preset Gap (in): 0.033 To 0.038 Inch Preset Gap (mm): 0.84mm To 0.97mm Thread Reach (in): 0.441 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Nickel Insulator Height (in): 0.125 Inch Ground Electrode Tip Material: Nickel Metallurgy: Copper Show More Show Less
Compare Champion Copper Spark Plug - 4151 Part #: 4151 Line: CHP Champion Copper Spark Plug Manufacturer's Defect Warranty Seat: Gasket Thread Size: M14 Heat Range: 9 Hex Size (in): 13/16 Inch Preset Gap (in): 0.029 To 0.035 Inch Preset Gap (mm): 0.74mm To 0.89mm Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Tip Material: Nickel Insulator Height (in): 0.062 Inch Ground Electrode Tip Material: Nickel Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number RC7YC3 Spark Plug - 444 Part #: 444 Line: CHP Champion Copper Plug Number RC7YC3 Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 7 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.035 Inch Preset Gap (mm): 0.89mm Thread Reach (in): 0.750 Inch Center Electrode Tip Material: Copper Insulator Height (in): 0.060 Inch Ground Electrode Tip Material: Nickel Service Number: RC7YC3 Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number RA6HC Spark Plug - 809C Part #: 809C Line: CHP Champion Copper Plug Number RA6HC Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M12 Heat Range: 6 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.023 To 0.028 Inch Preset Gap (mm): 0.58mm To 0.71mm Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Tip Material: Nickel Insulator Height (in): 0.031 Inch Ground Electrode Tip Material: Nickel Service Number: RA6HC Metallurgy: Copper Show More Show Less
Compare Champion Copper Spark Plug - 843S Part #: 843S Line: CHP Champion Copper Spark Plug 1 Year Limited Warranty Metallurgy: Copper