Champion Iridium Plug Number RES8WYPB3 Spark Plug - 9016 Part #: 9016 Line: CHP Champion Iridium Plug Number RES8WYPB3 Spark Plug 2 Year LIMITED WARRANTY Seat: Tapered Thread Size: M14 Heat Range: 8 Hex Size (in): 5/8 Inch Preset Gap (in): 0.032 Inch Preset Gap (mm): 0.8mm Thread Reach (in): 1 Inch Center Electrode Tip Material: Iridium Ground Electrode Tip Material: Platinum Service Number: RES8WYPB3 Metallurgy: Iridium/Platinum Show More Show Less