Pocket valves. Singles '26-'34. Servi-car '32-'65. D, DL, R, RL, W, WL, WLA, WLC, Knucklehead, Panhead, J, JD, JDH, VL, UL, EL, 41TA, ELC, FL, FLH. K-model 52-53. KH 54-56. Sportster, XL, XLH, XLC, XLCH 57-65. Topper 60-65. XA 1942. Indian carburetor.