Triumph 350 / 500 Unit Twins Inlet / Exhaust Valves (1) - 1957-74 - Choose Valve Type Valve Type - Diameter & Length:Inlet #70-3738 / E3738 - (.310" X 3.610") Replaces Triumph part numbers 70-7641

Replaces Triumph part numbers  70-7641

Oil pump comes complete as shown (excluding the worm gear)

etc from 1957-1974

Etc) from approx 1962-1968

* New English Made BSA Unit Twins & Singles Oddie Stud Mounting Clip

Triumph 350 / 500 Unit Twins Inlet / Exhaust Valves (1) - 1957-74 - Choose Valve Type Valve Type - Diameter & Length:Inlet #70-3738 / E3738 - (.310" X 3.610") Replaces Triumph part numbers 70-7641Rebuild your classic Triumph 350 500 unit twin by purchasing and installing our fine, English made valves. Each intake exhaust vale is manufactured from stainless steel to bring you both quality and longevity. Each valve will replace Triumph part number 70 4640, E4640, 70 3738, E3738, 70 3739, E3739, 70 4012, E4012, 70 4013, and E4013. Valves where fitted to a wide range of Triumph 350 and 500 models including the 3TA, T90, 5TA, T100, T100C, T100R,