Upgrade or replace with confidence using this Aftermarket crankshaft, 6-cylinder. Compatible with models including 4050, 4055, 4250, 4255, 4440, 4450, 4455, 4640, 4650, 4755, 4840, 4850, 4955, 6076, 6404, 6466. Interchangeable with OEM John Deere part number(s): AR74624, AR94700, AR96189, RE42671, RE53422. Designed to fit John Deere equipment and built for long-lasting performance.