BSA C15 B40 (Side points models only) B25 C25 B44 B50 Triumph TR25W, TR25SS/T
OD 7/8″, ID 7/16″, thickness 15/64″
OEM 40-0977, 70-8154, E8154, 41-0568
Crankshaft Timing Side Oil seal for BSA C15/B40 Sports Star 250/300cc (1967-), C25/B25 250cc (1967-), B25/B44 250/441cc (1967-72), B50 500cc (1971-72) and Triumph TR25W 250/441cc (1967-72).