Champion, Copper Plus spark plug. RA8HC 99-17 Twin Cam 86-22 XL (excl. XR1200) (NU)

(6R12). 12mm threaded. 19mm (1/2") long reach. Used with a 16mm spark plug 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 32317-80 and 32362-04A. 99-17 Twin Cam 86-22 XL (excl. XR1200) (NU)