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376/139 & 60-3439
Breather valves where fitted to twin cylinder models on the drive-side end of your inlet camshaft to aide engine breathing
I mounting bolt
Set comes complete with top and bottom bushings
We stock (2) types of tachometer drive assembly's
BSA M20 / M21 Replacement Oil Tank Filter (1) 66-8359 Nicholson 376/139 & 60-3439New BSA replacement oil tank oil filter. Keep your oil clean and free of debris by installing a new high quality BSA oil filter. Oil filter is designed to replace part number 66 8359. Comes with a metal cage with a gauze filter as OEM. This filter fits inside your BSA oil tank compatible with BSA M20 and M21 models. Check your parts book to ensure the best fitment. **Features** Made in England Replaces part number 66 8359