One New Aftermarket Replacement Ring & Pinion Set Fits Case Construction & Industrial BackhoesThis aftermarket replacement ring and pinion set fits the rear axle differential on Fits Case (Fits Case/International Harvester) backhoe loaders and industrial/construction machines. Replaces OEM part number A168883. The set includes both the ring gear and pinion shaft and is a direct replacement for worn or damaged differential gearing.Specifications Ring Gear: 47 Teeth, 20 Bolt Holes (threaded holes in back side), No Flange Pinion Shaft: 7 Teeth (ring gear end), 17 Splines (other end, with threads between splines), 10 Splines (mid-shaft) Serial Number Restrictions Fits Case 580E (580 Super E): Serial Number 16270319 and above Fits Case 580K: Serial Number 20,000 and below (2WD or 4WD) Compatible ModelsFits Case / Fits Case/International Harvester Backhoe & Industrial: 480D, 480E, 480F, 480LL, 580E (580 Super E), 580K, 580SD, 580SE, 584, 584D, 584E, 585, 585D, 585E, 586D, 586EReplaces Part Number(s):A168883, A168883 I, A168883-C, A168883C, A168883TNew aftermarket replacement part - not remanufactured, not used.