Compare Champion Copper Plug Number RC12LC4 Spark Plug - 436 Part #: 436 Line: CHP Champion Copper Plug Number RC12LC4 Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 12 Hex Size (in): 5/8 Inch Preset Gap (in): 0.040 Inch Preset Gap (mm): 1.02mm Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: RC12LC4 Metallurgy: Copper Show More Show Less
Compare ACCEL Spark Plug Spark Plug - 0786-4 Part #: 0786-4 Line: ACC ACCEL Spark Plug Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 6 Hex Size (in): 5/8 Inch Preset Gap (in): 0.044 Inch Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Copper Metallurgy: Copper Show More Show Less