BSA M20 / M21 Replacement Oil Tank Filter (1) 66-8359 Nicholson Compatible with 42-5550 & 42-5588

Compatible with 42-5550 & 42-5588 rims

I mounting bolt

Bobbin is sold individually

Breather valves where fitted to twin cylinder models on the drive-side end of your inlet camshaft to aide engine breathing

376/139 & 60-3439

BSA M20 / M21 Replacement Oil Tank Filter (1) 66-8359 Nicholson Compatible with 42-5550 & 42-5588New 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