Rear End Cover Cast Gray GM 8.2/8.5in 10 Bolt

The Rear End Cover Cast Gray GM 8.2/8.5in 10 Bolt by PROFORM is a precision-engineered differential cover designed for classic and modern General Motors rear axles. This cast gray component seals and protects your differential housing while adding a finished appearance to your undercarriage. Whether you're restoring a vintage muscle car, upgrading a daily driver, or building a custom hot rod, a quality rear end cover is essential for containing gear oil, preventing contamination, and maintaining proper lubrication under demanding driving conditions.

This PROFORM cover is engineered from durable cast gray material and finished in a professional tone that complements both OEM and aftermarket aesthetics. The 10-bolt configuration ensures compatibility with GM's most common differential housing design, providing a secure seal through precision bolt holes and a machined sealing surface. The casting process delivers structural integrity while maintaining lightweight characteristics—at 7.43 pounds, installation adds minimal unsprung weight.

The design accommodates both 8.2-inch and 8.5-inch ring gear diameters, making it versatile across multiple GM platform generations including Chevrolet, Pontiac, and Oldsmobile applications from the 1960s through modern restomod builds. Mechanics and enthusiasts benefit from this cover's straightforward installation—simply clean the differential housing surface, apply a thin bead of gasket sealer, and torque the bolts to factory specification.