Compare Denso Copper Plug Number K20HR-U11 Spark Plug - 3381 Part #: 3381 Line: DEN Denso Copper Plug Number K20HR-U11 Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 20 Hex Size (mm): 16mm Center Electrode Core Material: Copper Center Electrode Tip Material: Nickel Approximate Resistor Value (Ohm): 5000 Ohm Ground Electrode Tip Material: Nickel Service Number: K20HR-U11 Metallurgy: Copper Show More Show Less
Compare Champion Copper Plug Number REC12MCC4 Spark Plug - 446 Part #: 446 Line: CHP Champion Copper Plug Number REC12MCC4 Spark Plug 1 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 Core Material: Copper Center Electrode Tip Material: Copper Ground Electrode Tip Material: Nickel Service Number: REC12MCC4 Metallurgy: Copper Show More Show Less