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Description
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)
