All models '18-'57. J, JD, Singles, VL, VLH, UL, ULH, EL, 41TA, ELC, FL, FLH, R, RL, W, WL, WLA, WLC, WLD, Knucklehead, Panhead, Servi-car. Fan cooled generator 48-63. Sportster, KH, XL, 54-57. K-model '52-'53. Panhead, FL, FLH 41-64; fan.... XA 1942.