Crankshaft Lockwasher, for use on BSA models: B25, C25, B40, B44, C15, A50, A65 & B50. Triumph models: Triumph 200cc T20 Tiger Cub, T150, T160, TR7, T140, 6T, T120, 3TA, 5TA, T100, 3T, 5T, T100 & T120
O.E.M: 29-2054, 70-8224, 70-3975, E8224, E3975