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Rubber is used to cover your master cylinder as fitted to Norton Commando models both 750 and 850 from 1972-1975 with disc brakes
Cov Seal - USA
"4" 40-0483 Cylinder Stud Nut 3/8" X 26 (BSC)
cap and the correct fiber washers
thread pitch and part numbers before placing an order
BSA Pre-Unit Primary Cover Gasket 42-7507 (1) 68-0473 Rubber is used to coverNew English Made BSA Pre Unit Singles & Twins Primary Gasket. Stop annoying oil links by installing a new primary cover gasket. This primary cover gasket is compatible with models that feature the swinging arm frame. Replaces BSA part number 42 7507. Fits BSA pre unit twins (A7, A10, Goldenflash, Super Rocket, etc) from 1954 1963. Also fits BSA singles (B31, B32, B33, etc) from 1954 1957. Please refer to your parts book to ensure the best fitment.
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