Replacement for H-D RG6HCC. 10mm threaded. 4 used on M8, 2 used on XG. Used with a 16mm spark plug socket. Copper-core center electrode with the patented SAC-9 semiconductor resistor. Spark plug comes with the patented Ultraseal™ coated shell, to help keep the spark plug body corrosion free and better looking for a longer period of time.
Fits: 17-26 M8; 15-20 (NU) XG750/500 Street; 17-20 (NU) XG750A Street
 
4 Pieces (M8 Need 4 pcs)