All States Ag Parts Crankshaft Ford 9N 8N 2N 120 9N6303A Fits Ford Tractor(s) 2N (1/42-12/47), 8N (1/48-12/52), 9N (1/39-12/41) Fits Ford Engine(s) 120 (4 cylinder gas) Replaces Ford OEM nos 9N6303A Replaces Casting nos 9N6363A Engine Bore: 3.1875"