USA Standard Master Overhaul Kit For The GM 8.5 Diff w/ HD Posi or Locker

If your GM 8.5 rear end with Posi or locker is grinding, leaking, or just worn out, the GM 8.5 HD differential rebuild kit from USA Standard Gear is the fix you need. Designed for heavy-duty GM 8.5-inch axles, this master overhaul kit restores performance, eliminates gear noise, and keeps your rig running strong.

The GM 8.5 HD differential rebuild kit includes Timken bearings and races, high-quality seals, shims, ring gear bolts, a diff cover gasket, and marking compound with a brush. Whether you're rebuilding a performance street car or a hard-working truck, this kit delivers everything needed for a smooth, hassle-free install.

Built for durability and precision, USA Standard’s GM 8.5 HD differential rebuild kit is trusted by pros and DIYers alike. It’s a one-box solution that saves time, avoids mismatched parts, and gets your differential back to peak condition.

Features and Benefits

• Complete Overhaul Kit – All essential components for a full rear differential rebuild.

• Timken Bearings and Races – Trusted for strength, longevity, and smooth operation.

• High-Quality Seals and Shims – Prevent leaks and ensure precise gear alignment.

• Ring Gear Bolts and Gasket – Secure fit and clean seal for long-term reliability.

• Marking Compound and Brush – Helps set gear patterns accurately during install.

Built for GM HD Performance

Whether you're laying down torque or hauling heavy loads, the GM 8.5 HD differential rebuild kit from USA Standard Gear gives your axle the refresh it deserves. Say goodbye to gear whine and hello to smooth, confident driving.

Specifications

This Part Fits: