Pinion Shaft
CTPA-R112836 Replacement Part to Fit:  John Deere For Models: 4840, 4850, 4955, 4960, (8640, 8650 ALL FRONT / REAR AXLES) Replaces: R74072, R61421. 14 Tooth, 22 Spline, 12.000" Long  Price:  $222.60  Buyers Club Price:  $200.34