This is a A-163928A Shaft, Clutch PN: 163928AMain Description As Following : A-163928A Shaft, Clutch P.N: 163928A Dim A (1): 9.250" LongSpline Count: 27 Spline Found in Section & Models : Transmission & Rear Axle > Clutch Related Parts, White/ Oliver/ Mpl Moline TRACTOR: 1750 (SN 190958>), White/ Oliver/ Mpl Moline TRACTOR: 1850 (SN 198394>), White/ Oliver/ Mpl Moline TRACTOR: 1950 (SN 194080>) Associated Items : New Also A-FRM-OLLATE, A-OL-O-1750, A-OL-P-1750, A-OL-S-1750, A-SMO202, A-FRM-OLLATE, A-OL-O-1850, A-OL-P-1850, A-OL-S-18501950, A-SMO202, A-DD-S-53SERIES, A-FRM-OLLATE, A-OL-O-1950, A-OL-P-1950, A-OL-S-18501950, A-SMO202 And : Dim A (1): 9.250" Long Spline Count: 27 Spline