OEM: 377449-56
Fits: 1956 K Model / 1957-66 XLH / 1958-69 XLCH
OEM: 377448-67
Fits: 1967-1970 XLH / 1970 XLCH
OEM: 37448-71
Fits: 1971-79 Ironhead Sportsters
OEM: 37448-79
Fits: Late 1979-Early 1984 Ironhead Sportsters
OEM: 37448-84A
Fits: Late 1984-85 Ironhead / 1986 only Evo
OEM:37-448-87
Fits: 1987-1990 Evo Sportsters
