Champion Iridium Plug Number RS8WYPB5 Spark Plug - 9808 Part #: 9808 Line: CHP Champion Iridium Plug Number RS8WYPB5 Spark Plug Manufacturer's Defect Warranty Seat: Tapered Thread Size: M14 Heat Range: 8 Hex Size (in): 5/8 Inch Preset Gap (in): 0.051 Inch Preset Gap (mm): 1.3mm Center Electrode Tip Material: Iridium Ground Electrode Tip Material: Platinum Service Number: RS8WYPB5 Metallurgy: Iridium/Platinum Show More Show Less