*Back In Stock!* New Top Quality Triumph & BSA Unit Twins Clutch “Trap Door” Oil Seal. As we always say here at C.B.S., don’t settle for Cheap & Low Quality Oil Seals! Do your Rebuild the Correct way… the First Time! Just install and away you go! Fits all Triumph Unit 650 Twins (Bonneville, Trophy, TR6, T120TT, T120R, 6T, TR6C, Etc) from 1963-1967 only with the Correct Clutch Window Cover. Also fits all BSA Unit Twins (Lightning, Rocket, Spitfire, Hornet, Wasp, Cyclone, Etc) from 1962-1972. Please refer to your parts catalog for proper fitment.
*****Please note that this “Trap Door” Oil Seal will not work on 1968-1972 Triumph 650 Unit Twins as the Size is Different! Inspect & check your parts book!*****Made in TaiwanO.E.M Part number is 70-4578, E4578 or 68-0235