AM220T New Rear Crankshaft Seal Fits John Deere Tractor M 320 330 40 420 430 440One New Aftermarket Replacement Rear Crankshaft Seal Fits John Deere M Series and Two Cylinder Tractors This aftermarket replacement rear crankshaft oil seal is Fits John Deere two cylinder tractor line, sealing the rear main crankshaft journal to prevent oil leaks at the back of the engine block. Compatible with gas powered models across the M, 40, 320, 330, 420, and 430 series, including all M series variants (M, MC, MI, MT). Specifications Inside