Compare Maximum number of 4 items selected NGK Iridium/Platinum Plug Number IZFR6Q Spark Plug - 91234 Part #: 91234 Line: NGK NGK Iridium/Platinum Plug Number IZFR6Q Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14-1.25 Heat Range: 6 Hex Size (in): 5/8 Inch Preset Gap (in): 0.032 Inch Preset Gap (mm): 0.8mm Thread Reach (in): 0.750 Inch Resistor Plug: Yes Center Electrode Core Material: Copper Center Electrode Tip Material: Iridium Approximate Resistor Value (Ohm): 5000 Ohm Insulator Height (mm): 51mm Insulator Height (in): 1.990 Inch Ground Electrode Tip Material: Platinum Thread Reach (mm): 19mm Service Number: IZFR6Q Metallurgy: Iridium/Platinum Show More Show Less