Compare Maximum number of 4 items selected ACDelco Iridium IP Spark Plug - 41-162 Part #: 41-162 Line: ACD ACDelco Iridium IP Spark Plug 7 Year Limited Warranty Seat: Tapered Thread Size: M14-1.25 Heat Range: 14 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.040 Inch Preset Gap (mm): 1.02mm Thread Reach (in): 0.680 Inch Resistor Plug: Yes Center Electrode Core Material: Iridium Center Electrode Tip Material: Iridium Insulator Height (mm): 24.7mm Insulator Height (in): 0.972 Inch Ground Electrode Tip Material: Platinum Thread Reach (mm): 17.5mm Metallurgy: Iridium/Platinum Show More Show Less