USA Standard 11.5 inch AAM, 4.56 Ratio Rear Ring and Pinion Gear Set and Master Install Kit Package, with 30 Spline Yukon Dura Grip Limited Slip Positraction, with 4.125 inch OD Inner Pinion Bearing. (GM and Chrysler/ Dodge/ Ram) Details: Rear Differential 11.5 inch AAM Gear Ratio 4.56 Location Rear Structured Ring and Pinion Install Kit Positraction Yes Over Drive 4.125 inch Overdrive Pinion Bearing Warranty Warrantied against manufacturing defects for one (1) year Sold As Kit Features: For Applications with 14 Bolt Rear Cover and 12 Bolt Ring Gear Includes HM807046/ HM807010 Inner Pinion Bearing and Race with 4.125 inch Outside Diameter Quick Kits feature USA Standard ring and pinion gear set, Master Install kit with high quality Koyo bearings and the necessary small parts required to get vehicles off the lift and back on the road quickly. Quick Kits provide a one-stop shopping experience that allows you to easily find the correct parts for common differential repairs at an affordable price. The Gear and Install Kit Includes Yukon Dura Grip Clutch Style Limited Slip (LSD); All positraction units are fully rebuildable. The Ring Gear Diameter is 11.5 inch USA Standard Quick Kits provide four convenient differential repair packages to save time and money by including everything you need in one simple part number. This particular kit contains a 4.56 Ring and Pinion Gear Set Features and Benefits: For Applications with 14 Bolt Rear Cover and 12 Bolt Ring Gear Includes HM807046/ HM807010 Inner Pinion Bearing and Race with 4.125 Inch Outside Diameter Quick Kits feature USA Standard ring and pinion gear set, Master Install kit with high quality Koyo bearings and the necessary small parts required to get vehicles off the lift and back on the road quickly. Quick Kits provide a one-stop shopping experience that allows you to easily find the correct parts for common differential repairs at an affordable price. The Gear and Install Kit Includes Yukon Dura Grip Clutch Style Limited Slip (LSD); All Positraction units are fully rebuildable. The Ring Gear Diameter is 11.5 Inch USA Standard Quick Kits provide four convenient differential repair packages to save time and money by including everything you need in one simple part number. This particular kit contains a 4.56 Ring & Pinion Gear Set Details: Grade Type: Regular Fitment Notes: AAM 11.5 inch. Gear and Install Kit Package Includes 4.56 Ratio Gear Set and Master Install Kit with 4.125 inch. OD Inner Pinion Bearing Race, and 30 spline Dura Grip Limited Slip Carrier Application Summary: 2003-2010 Dodge Ram 2500 (Rear) (Fuel: Diesel) 2001-2010 Dodge Ram 3500 (Rear) (Fuel: Diesel) 2007 Chevrolet Silverado 2500 HD Classic (Rear) (Qualifier: with AAM 11.5 Rear Full-Floating Axle) 2007 Chevrolet Silverado 3500 Classic (Rear) 2001-2010 Chevrolet Silverado 2500 HD (Rear) 2001-2006 Chevrolet Silverado 3500 (Rear) (Qualifier: with AAM 11.5 Rear Full-Floating Axle) 2007-2010 Chevrolet Silverado 3500 HD (Rear) 2007 GMC Sierra 2500 HD Classic (Rear) 2007 GMC Sierra 3500 Classic (Rear) 2001-2010 GMC Sierra 2500 HD (Rear) 2001-2006 GMC Sierra 3500 (Rear) 2007-2010 GMC Sierra 3500 HD (Rear) (Qualifier: with AAM 11.5 Rear Full-Floating Axle)