Compare Maximum number of 4 items selected ACDelco Rapidfire Platinum Spark Plug - 17 Part #: 17 Line: ACD ACDelco Rapidfire Platinum Spark Plug 3 Year Limited Warranty Seat: Tapered Thread Size: M14 Heat Range: 12 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.042 Inch Preset Gap (mm): 1.09mm Thread Reach (in): 0.980 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): 52.5mm Insulator Height (in): 2.067 Inch Ground Electrode Tip Material: Nickel Thread Reach (mm): 25mm Metallurgy: Platinum Show More Show Less