PML Differential Cover for GM 7½" and 7 5/8" Ring Gear, 10 Bolt, Straight Fins

Part Number 6086

As-cast finish
$200.00

8mm-1.25x21 bolts:

8mm-1.25x16 bolts:

5/16in-18x7/8 bolts:

5/16in-18x5/8 bolts:

Black powder coating
$270.00

8mm-1.25x21 bolts:

8mm-1.25x16 bolts:

5/16in-18x7/8 bolts:

5/16in-18x5/8 bolts:

Polished finish
$375.00

8mm-1.25x21 bolts:

8mm-1.25x16 bolts:

5/16in-18x7/8 bolts:

5/16in-18x5/8 bolts:

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

Volume: 0.5 qt. over stock, approximately

Dimensions: Click here for dimensions. A separate window or tab will open.

PML makes two differential covers for the GM 7.5, 7.625 inch 10 bolt rear end. See PML GM 7.5 Rear Differential Covers Web Page to compare.

Benefits:

• Extra capacity
• Drain hole and magnetic plug to simplify maintenance
• Classic straight fins for heat dissipation
• 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

  
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These images show this PML differential cover compared to the stock cover.

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.

Installations

2002 Chevy Blazer

Pat installed this cover on his 2002 Blazer. His stock bolts were 5/16-18x7/8 inch. Our thanks to Pat for the pictures of his installation.

Stock rear differential cover for GM 7.5 inch ring gear on a 2002 Chevy Blazer   GM 7.5 inch ring gear rear differential gears on a 2002 Chevy Blazer   PML differential cover installed on a 2002 Chevy Blazer
Click on an image to view larger in a new tab or window.

1993 GMC Typhoon

Matthias installed this PML cover on his 1993 GMC Typhoon with a GM 7.625 differential. His truck is lowered by 1.4 inches.

Stock Bolt   PML differential cover installed on a 1993 GMC Typhoon   Suspension   1993 GMC Typhoon
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For a larger picture, please click one of the above images. A separate window will open showing a bigger picture. (The larger pictures take a minute to display.)

PML Differential Cover Features:

• Increased oil capacity for cooler temperatures
• Sand-cast aluminum with raised fins
• 3/16-inch thick wall construction to add strength to differential housing
• 3/8-inch thick gasket flange will not bend when bolts are tightened
• Machined gasket surface for a secure seal using RTV or factory reusable gasket
• Oil changes without removing the cover
• All hardware provided, including magnetic drain plug

Learn more about finishes and construction of PML parts.