GM 7.5 / 7.6 Differential Cover – Straight Fins – Heavy Duty Aluminum Upgrade

Enhance the performance and protection of your drivetrain with this GM 7.5 / 7.6 Differential Cover with Straight Fins, designed to improve cooling and durability under a variety of driving conditions. The straight fin design increases surface area for better heat dissipation, helping maintain optimal differential temperatures during daily driving, towing, and performance use.

Constructed from high-quality aluminum, this differential cover provides superior strength compared to factory stamped covers while offering added protection for internal components. The finned design not only improves cooling efficiency but also adds a clean, performance-inspired appearance.

Engineered as a direct-fit replacement for GM 7.5 and 7.6 differentials, this cover ensures dependable fitment, secure sealing, and long-lasting reliability.

✅ Key Features:

• Fits GM 7.5 and 7.6 differentials
• Straight fin design for improved heat dissipation
• Heavy-duty aluminum construction for strength and durability
• Provides added protection for internal components
• Ideal for daily driving, towing, and performance applications
• Direct fit for easy installation and leak-free sealing

Upgrade your differential with confidence and enjoy improved cooling, enhanced durability, and long-lasting performance.

Volume: 0.5 qt. over stock, approximately

Dimensions: Click here for dimensions. 

Number of Bolts: 10 bolts, Guidelines for Bolt Sizes (click here), opens in new tab or window

PML makes two covers for the GM 7.5, 7.625 inch ring gear differential, 10 bolts. This cover has a classic straight fin design. For the other cover, see PML Gm 7.5, 7.625, Patterned Fins differential cover.

Benefits:

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

Applications:

This PML diff cover fits the GM with 7.5 or 7.625 inch (7 1/2 or 7 5/8) ring gear 10 bolt differential. Configurations vary. Typical applications that may be able to use this cover include the following.

• Chevy Astro Van, 1982 to 2005
• Chevy Camaro, 1993 to 2002
• Chevy S10, 1983 to 2004
• Chevy S10 Blazer, 1983 to 2004

• GMC Jimmy, 1984 to 2004
• GMC S15, 1983 to 1994
• GMC Safari Van, 1982 to 2005
• GMC Sonoma, 1991 to 2004
• GMC Typhoon

• Pontiac Firebird, 1993 to 2002

• Some Mazda trucks

Configurations vary. Always check your vehicle to verify differential and clearance.

Bolt Information: GM has used four different bolts on these differentials. See Guidelines for Bolt Sizes (click here), opens in new tab or window

Brackets and Cables: Some vehicles have brackets or cables on or near the stock cover. PML does not have any information on modify these to work with our larger cover. Such modifications are the responsiblity of the installation.

PML Differential Cover Compared to Stock

   
Click on image to view larger in a new tab or window.

This image compares the depth of both PML GM 7 1/2, 7 5/8 inch rear differential covers and the stock cover. Click on image to view larger in a new tab or window.