8.6" GM 3.73 Rear Ring & Pinion, Install Kit, Axle Bearings & Seal

8.6" GM 3.73 Rear Ring & Pinion, Install Kit, Axle Bearing & Seal. USA Standard 8.6" GM, 3.73 Ratio Rear Ring & Pinion Gear Set and Master Install Kit Package, with Axle Bearing & Seals. USA Standard Gear Ring Gear & Installation Kits are an easy way to re-gear a differential with one simple part number. The kits package a ring and pinion set with a Master Installation Kit that contains all the bearings, seals, and small parts needed for a proper install. USA Standard Gear employs rigorous in-house quality testing and inspections to ensure its gears pass dimensional, material, and fitment testing. Available in a wide variety of OEM and aftermarket ratios, USA Standard Gear ring and pinion sets are ready to withstand the rigors of everyday commuting, trail running, and all types of spirited driving.