Magneto Mounting Flange Gasket, Fits BSA, Triumph, AJS, Matchless, Norton, Velocette etc. That Were Fitted With Lucas & BTH Mags. 

Part Nos.67-1258, K106-48, M260, 10339. 10384-54.

Superb extra thick quality gasket which fits between the Lucas or BTH magneto flange face and the crankcase.

Suitable for many Manufacturers and Models of classic motorcycles.

It will fit AJS/Matchless, Triumph, BSA, Norton and many other classic makes.