Fits: 1940-'48 Over Head Valve. Knuckle head series. 8 Ribs, w/tapped hole for top end oiling,
1/4" gen mount holes*. Stock Pinion bushing I.D. 11/16" - Natural Finish
*Generator mounting holes must be drilled to 5/16" for use with1958-later generators. Cast generator gearcovers come with countersunk hardware