Master Overhaul Kit GM 8.5 Rear

The Master Overhaul Kit GM 8.5 Rear by Yukon Gear and Axle is the complete solution for rebuilding or freshening a General Motors 8.5-inch rear differential. Designed for both automotive enthusiasts and professional mechanics, this kit consolidates all the critical sealing and bearing components needed to restore OEM performance and reliability. Whether you're addressing a worn differential after years of towing, street use, or performance driving, this master kit eliminates the guesswork of sourcing individual components.

This overhaul kit includes precision-engineered seals, gaskets, and bearing components that are engineered to OEM tolerances and materials. The master kit format ensures you receive all essential wear items—pinion seals, side seals, bearing races, and gaskets—in a single, coordinated package. This design helps prevent mixing incompatible parts or forgetting critical components during teardown and reassembly.

Mechanics and DIY builders working on Chevrolet and GMC trucks—especially those with factory 8.5-inch rears—will find this kit indispensable for full-depth overhauls or refresh procedures. Yukon's quality control ensures these components maintain proper preload, clearance, and seal integrity, which are essential for preventing fluid weepage and extending differential life under both street and moderate off-road duty cycles.