This is a A-R59696 Pinion Gear, Used w/ A-R59698 Shaft PN: R59696Main Description As Following : A-R59696 Pinion Gear, Used w/ A-R59698 Shaft P.N: R59696 Dim A (1): 31 TeethDim B (2): 2.755" Wide Found in Section & Models : Transmission & Rear Axle > Diff Planetary Carriers and Related Parts, John Deere TRACTOR: 4255, John Deere TRACTOR: 4350, John Deere TRACTOR: 4440 (SN <10329 W/ 86MM OR W/ 92 MM), John Deere TRACTOR: 8440 (FRONT AXLE), John Deere TRACTOR: 8450 (FRONT AXLE), John Deere TRACTOR: 8630 (FRONT AXLE SN 7843>) Associated Items : A-R59698 Also A-JD-O-OMR65461, A-JD-S-TM1182, A-SMJD202, A-JD-O-OMR65222, A-JD-S-TM1143 And : Dim A (1): 31 Teeth Dim B (2): 2.755" Wide