Rear Differential Cover For 10-Bolt Diffs With 8.5 Inch And 8.6 Inch Ring Gear, Fits Chevy GM Silverado 1500 Buick 1964 And Up, Black Die Cast Aluminum Cover With Girdle Gasket, Bolts, Drain Plug

Rear Diff Cover for 10-Bolt Axles with 8.5-8.6 RG
✔️ Single unit kit includes 1 cover, girdle gasket, 10 bolts, drain plug

This rear differential girdle cover is a sturdy upgrade for 10-bolt axles with 8.5 and 8.6 inch ring gears. It fits Chevy, GMC Silverado 1500 Buick models from 1964 and up and is used to strengthen the rear end, improve heat dissipation, and extend drivetrain life.

✅ Bolt pattern: 10 bolt
✅ Material: high grade die cast aluminum
✅ Bolts size: 5/16-18 x 1 in; drain plug: 1/2 in NPT
✅ Includes: 1x cover, 1x girdle gasket, 10x mounting bolts, 1x drain plug

💡 What is a rear differential cover for 10-bolt axles used for in a heavy-duty or daily driver setup?

It protects the gears and seals while adding strength and oil capacity. - Protects gear oil and seals
- Improves heat dissipation under load
- Increases oil capacity for longer change intervals
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