Champion Spark Plug, Copper Plus RA6HC For Harley Davidson

HD RA6HC (10R12X).
12 mm thread.
Requires a 16mm spark plug socket.
Copper core center electrode with patented SAC-9 semiconductor resistor.
The spark plug comes with the patented Ultraseal™ coated housing, to help keep the spark plug body corrosion-free and looking better for a longer period of time.
4 units
Custom replacement for OEM 27794-08