This is a A-70239530 Input Shaft, Transmission PN: 70239530Main Description As Following : A-70239530 Input Shaft, Transmission P.N: 70239530 Dim A (1): 21 / 20 / 8 TeethDim B (2): 9.920" Long Found in Section & Models : Transmission & Rear Axle > Trans: Forks, Gears, Shafts, Allis-Chalmers TRACTOR: D17, Allis-Chalmers TRACTOR: D19, Allis-Chalmers TRACTOR: 170, Allis-Chalmers TRACTOR: 175 Associated Items : New Also A-AC-O-D17DERLY, A-AC-O-D17DSL, A-AC-O-D17GAS, A-AC-O-D17III, A-AC-O-D17IV, A-AC-O-D17MID, A-AC-O-IMPLHITCH, A-AC-O-MARKIVANDV, A-AC-P-D17, A-AC-P-D17SERIV, A-AC-S-D17, A-AC-S-FUELINJ, A-FRM-ACCACO, A-SMAC201, A-AC-O-D19, A-AC-O-IMPLHITCH, A-AC-P-D19, A-AC-S-D19, A-AC-S-FUELINJ, A-FRM-ACCACO And : Dim A (1): 21 / 20 / 8 Teeth Dim B (2): 9.920" Long