Champion Iridium Plug Number RS14WLPB5 Spark Plug - 9402 Part #: 9402 Line: CHP Champion Iridium Plug Number RS14WLPB5 Spark Plug 2 Year LIMITED WARRANTY Seat: Tapered Thread Size: M14 Heat Range: 14 Hex Size (in): 5/8 Inch Preset Gap (in): 0.055 Inch Preset Gap (mm): 1.4mm Center Electrode Tip Material: Iridium Ground Electrode Tip Material: Platinum Service Number: RS14WLPB5 Metallurgy: Iridium/Platinum Show More Show Less