Triumph - TR2 (1953-1955). 1 x Gearbox Front Oil Seal (Part No: 141756). 1 x Gearbox Rear Oil Seal (Part No: GHS179). Triumph - TR3 (TR3B(TSF) Version and NOT TR3B(TCF)) (1955-1962). Autogear Transmissions Limited supplies Premium Quality transmission gaskets and oil seals.