2 Champion Copper Plus RH8C Spark Plugs Early Harley Sportsters

Champion Copper Plus spark plugs have a copper core center electrode that allows for accurate control of heat range, optimizing performance, and longevity of the spark plug. Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression and patented Ultraseal coated shell for rust prevention. Thread : 14mmg. Sold in pairs. This listing for Champion RH8C / CCH-538 plugs. Suitable for early Harley Davidson Sportster models up to 1978 and other applications which use this spark plug.