Champion tennplugg. Evo, Shovelhead og jernsportster. 4 pakning.

Evolution Big Twin 84-99, 1975 thru 1981 Shovelhead, , Ironhead Sportster and S&S SH Series, S&S P-Series, S&S KN-Series, S&S 3 5/8" bore and S&S 4" bore engines