Representative Image NGK Iridium Plug Number BCPR7EIX Spark Plug - 5690 Part #: 5690 Line: NGK NGK Iridium Plug Number BCPR7EIX Spark Plug 1 Year Limited Warranty Seat: Gasket Thread Size: M14-1.25 Heat Range: 7 Hex Size (mm): 16mm Hex Size (in): 5/8 Inch Preset Gap (in): 0.032 Inch Preset Gap (mm): 0.8mm Thread Reach (in): 0.750 Inch Center Electrode Core Material: Copper Center Electrode Tip Material: Iridium Approximate Resistor Value (Ohm): 5000 Ohm Insulator Height (mm): 53mm Insulator Height (in): 2.090 Inch Thread Reach (mm): 19mm Service Number: BCPR7EIX Metallurgy: Iridium Show More Show Less