New BSA Unit Twins Primary Chain Tensioner Screw Oil Seal. If your BSA has developed a leak under the primary cover, chances are that this seal is worn. This seal installs on the tensioner screw in which is used to adjust your primary chain. Fits all BSA A50 & A65 Unit Twins (Lightning, Royal Star, Wasp, Spitfire, Thunderbolt, Etc) from 1962-1972. Also fits all BSA & Triumph Triples from 1968-1976. Please refer to your parts catalog for proper fitment.
*****Always check your parts book to ensure that this part will work for your application.*****
•Made in England
•O.E.M Part number for sealing washer is 68-0861 or 71-3222
*****Always check your parts book to ensure that this part will work for your application.*****
•Made in England
•O.E.M Part number for sealing washer is 68-0861 or 71-3222