Champion Iridium Plug Number RC10WMPB3 Spark Plug - 9013 Part #: 9013 Line: CHP Champion Iridium Plug Number RC10WMPB3 Spark Plug 2 Year LIMITED WARRANTY Seat: Gasket Thread Size: M14 Heat Range: 10 Hex Size (in): 5/8 Inch Preset Gap (in): 0.030 Inch Preset Gap (mm): 0.75mm Center Electrode Tip Material: Iridium Ground Electrode Tip Material: Platinum Service Number: RC10WMPB3 Metallurgy: Iridium/Platinum Show More Show Less