AT18031 RE521349 R100142, T20031, T23516 Crankshaft Fits John Deere Tractor Case 1/8" NPT to 1/8" Compression:

1/8" NPT to 1/8" Compression: JJS827

but you will have to check your cover casting number to confirm if it will work with this seal if you have an early engine serial number

Includes cap and rotor

4250 4255 4240 4320 4430 4440 4450 4455 4520 4620 4630 4640 4650 4840 4850 7020 8430 8450 8570 Tractors

AT18031 RE521349 R100142, T20031, T23516 Crankshaft Fits John Deere Tractor Case 1/8" NPT to 1/8" Compression:Quality Aftermarket AT18031 RE521349 R100142, T20031, T23516 Crankshaft Fits John Deere Tractor Fits: Fits the following w 3 152, 3 164, 3 179 diesel engine w 1. 37" (short) nose using 1 bolt to retain crankshaft pulley: 820 3 cyl., 830 3 cyl., 1020, 2040, 2150, 2155, 2240, 2255; Industrials Specifications See website for all applications. Bearings & gear not included. Replacement Numbers AT18031, RE521349; Serviceable for RE46896, RE47637 w out