Compare Maximum number of 4 items selected ACDelco Rapidfire Platinum Spark Plug - 5 Part #: 5 Line: ACD ACDelco Rapidfire Platinum Spark Plug 3 Year Limited Warranty Seat: Gasket Thread Size: M14 Heat Range: 12 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.047 Inch Preset Gap (mm): 1.2mm Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Platinum Approximate Resistor Value (Ohm): 6000 To 15000 Ohm Insulator Height (mm): 54.2mm Insulator Height (in): 2.134 Inch Ground Electrode Tip Material: Nickel Thread Reach (mm): 19mm Metallurgy: Platinum Show More Show Less