BChampion RA8HC - Copper Plus Spark Plug - -- ReviewbP PP Champion RA8HC - Copper Plus Spark Plug - -- PPatented SAC-9 semi-conductor resistor for maximum EMI and RFI suppressionPPatented Ultraseal coated shell for rust preventionPSold eachP99-09 Twin Cam H-DP86-09 XL H-DP