BRAND NEW GM 8.5" 10-Bolt Ring & Pinion & Master Bearing/Installaton Kit 3.73 Ratio Master Bearing/Installation Kit Includes: Carrier Bearings/Races, Pinion Bearings/Races, Pinion Seal, Pinion Nut, Pinion Shims, Crush Sleeve, Carrier Shims, Ring Gear Bolts, Gasket, Marking Compound, Brush & Lock-Tite This Bearing kit will fit stock carriers. For aftermarket Eaton/Auburn Posi Units with HD Bearings see other listings. * BRAND NEW GM 8.5" 10-Bolt Ring & Pinion & Master Bearing/Installation Kit * Premium Quality Gear - 3.73 Ratio * Manufactured with 8620 Heat-Treated Material * Master Bearing/Installation Kit Includes: Carrier Bearings/Races, Pinion Bearings/Races, Pinion Seal, Pinion Nut, Pinion Shims, Crush Sleeve, Carrier Shims, Ring Gear Bolts, Gasket, Marking Compound, Brush & Lock-Tite * This Bearing kit will fit stock Carriers. For aftermarket Eaton/Auburn Posi Units with HD Bearings see other listings.