Camshaft Timing Cover Oil Feed Rubber Seal as fitted to BSA B31, B32, B33, B34 and M20, M21, M33 models from 1940-63.
ID: 3/8" (9.2mm)OD: 3/4" (19.3mm)Thickness: 3/8" (9.4mm)
MADE IN ENGLAND
OEM: 66-1923