1 Motorcycle Champion, Copper Plus Spark Plug. N12YC. FL; FX; BT. BC42416

Champion, Copper Plus spark plug. N12YC

H-D 5R6A. 14mm threaded, long reach. Used with a 21mm spark plug socket. Copper-core center electrode. 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 L78-E82 FL; L78-79 FX; 84-99 Big Twin (Excl. Twin Cam); 75-E78 FL, FX (NU)