Differential Gasket GM 7.5

The RATECH Differential Gasket GM 7.5 (part number 5110) is a precision-engineered cover gasket designed for GM 10-bolt differential assemblies, specifically the 7.5-inch and 7.625-inch configurations. This 0.037-inch thick paper gasket creates a critical seal between the differential cover and housing, preventing gear oil seepage that can degrade drivetrain performance and cause premature wear of internal components. OEM-specification gasket replacement is essential during any differential service, rebuild, or cover removal—a task common in off-road recovery operations, vehicle restoration, and routine powertrain maintenance.

The gasket's paper composition and precise thickness specification are critical to sealing effectiveness. At 0.037 inches, this gasket compresses under cover bolt torque to create a leak-free interface without binding or over-compression. The material is formulated to resist mineral oil saturation and maintain integrity across the temperature cycling inherent in vehicle operation. Proper installation requires clean mating surfaces and correct bolt torque sequence to avoid distortion or gasket migration that would compromise the seal and result in fluid loss.

This gasket serves technicians and vehicle operators performing differential maintenance on trucks and vehicles equipped with GM 10-bolt rear differentials. It is particularly relevant for users maintaining older GM trucks and SUVs, as well as those rebuilding or servicing differentials for off-road or high-load applications where gear oil integrity is non-negotiable. The RATECH gasket ensures OEM-correct fit and sealing performance, eliminating the risk of field failures caused by inferior aftermarket gasket materials.

RATECH is recognized as a leading manufacturer of differential components and rebuild kits for both street and off-road applications. The 5110 gasket is a consumable wear item that should be replaced whenever the differential cover is removed, ensuring seal integrity and preventing costly oil leaks that can damage bearings and gears over time.