Crankshaft Rebuilders remanufactures the highest quality Ford Crankshafts available. All Crankshaft Rebuilders Ford Crankshafts are remanufactured in the USA by quality technicians with years of experience. This crankshaft kit fits 351W , engines with one piece rear oil seal from 1983-1998, and forgine #'s 3M 3MA 7M 7MA E4AE-BA from 1983-1998 with one piece rear oil seal