Copper Plus Spark Plug RA6HC

Champion Copper Plus Spark Plug RA6HC

H-D RA6HC (10R12X). 12mm threaded. Requires 16mm spark plug wrench socket. Copper-core center electrode with the patented SAC-9 semiconductor resistor. Spark plug comes with the patented UltrasealT coated shell; to help keep the spark plug body corrosion free and better looking for a longer period of time. Custom replacement for OEM 27794-08.