Differential Cover 77-90 GM Truck 8.5in 10-Bolt

The Differential Cover 77-90 GM Truck 8.5in 10-Bolt is purpose-built protection for the rear axle assembly on second-generation GM trucks and SUVs. This stamped steel cover is essential for maintaining the integrity of the differential housing, ensuring that internal components are shielded from road debris, mud, and moisture while effectively containing gear oil.

Manufactured by Specialty Products Company, this differential cover fits the 8.5-inch 10-bolt rear axle, commonly found in full-size Chevy and GMC trucks from 1977 through 1990. The robust stamped steel construction provides a secure seal against the housing flange, and the integrated bolt pattern aligns with factory mounting points for easy installation. A new gasket seal is included to ensure optimal oil retention and prevent leaks that could lead to premature wear.

This cover is ideal for truck enthusiasts and mechanics performing routine maintenance, addressing road damage, or upgrading gear ratios and limited-slip differentials. Whether restoring a classic square-body Chevy truck or simply replacing a damaged cover, this product offers the reliability and performance needed for a well-functioning drivetrain.