GM 8.875 12 Bolt Truck Differential Cover – Heavy Duty Aluminum Upgrade

Enhance the durability and protection of your drivetrain with this GM 8.875 12 Bolt Truck Differential Cover, designed to deliver superior strength and improved cooling under demanding conditions. Ideal for towing, hauling, and heavy-duty applications, this upgraded cover helps protect your differential while maintaining optimal performance.

Constructed from high-quality aluminum, this differential cover offers increased durability compared to factory stamped covers. The rugged design helps shield internal components from damage while improving heat dissipation to keep your differential operating at optimal temperatures.

Engineered as a direct-fit replacement for GM 8.875 12 bolt truck differentials, this cover ensures dependable fitment, secure sealing, and long-lasting reliability.

✅ Key Features:

• Fits GM 8.875 12 bolt truck differentials
• Heavy-duty aluminum construction for strength and durability
• Improves heat dissipation and cooling
• Provides added protection for internal components
• Ideal for towing, hauling, and heavy-duty applications
• Direct fit for easy installation and leak-free sealing

Upgrade your differential with confidence and ensure maximum durability and performance in demanding conditions.

Volume: 1.0 quart over stock

Dimensions: Click here for dimensions. 

Depth inside is 4½ inches.

Number of Bolts: 12 bolts

This PML cover fits the GM 8.875 inch (8 7/8") ring gear 12 bolt differential for trucks.

Benefits:

• Extra capacity
• Drain hole and magnetic plug to simplify maintenance
• Fins for heat dissipation and classic styling
• Sand cast aluminum construction for thick walls
• Machined gasket flange for a secure seal
• Round shape similar to stock cover

Applications:

Typical applications include GMC and Chevy trucks and SUVs, ½ and ¾ ton, with 2 or 4 wheel drive, from 1963 to 1991. Some common applications for this rear end cover are:

• C10 & K10, 1967 to 1976
• C20 & K20, 1973 to 1976
• Chevrolet Blazer, 1969 to 1976
• GMC Jimmy, 1969 to 1976
• Suburban 10/1500, 1973 to 1981
• Suburban 20/2500, 1973 to 1991

Verify differential and clearance before ordering. Configurations vary. These trucks and SUVs had several possible differentials.

Vehicles with coil suspension can have a track bar close to the stock differential cover. Vehicles with leaf suspension generally have plenty of space for a larger aftermarket part.

Drain

During servicing, a hole on bottom of PML cover provides quick and easy draining fluid without removing the cover. PML includes a magnetic drain plug with each cover.

Cover also ships with new mounting bolts.