Crankshaft bearing 1" x 2 1/4" x 5/8" (open).
AJS - Matchless 350 & 500 cc singles.
1938 / 1954: inner drive side.
1938 / 1966: outer drive side.
Part numbers: 01-7191, 1440-30, A2-30, 89-3022
Crankshaft Bearing D/S AJS/Matchless Mod 16/18/G3/G80 (1947-56), Ariel NG/NH Red Hunter (1946-61), 350/500cc (1954-58), 500cc VH (1949-59), BSA B50 (1971-72), Norton Mod 18/ES2/16H/BIG4/19, Royal Enfield 350/500cc Bullet (1953-), Sunbeam 500cc
