AAM 11½" Ring Gear, 14 Bolt
Differential Cover For GM Trucks

P/N 9511

This American Axle rear end differential cover fits GM trucks Silverado and Sierra 2500HD & 3500 with the Duramax or 8.1 engine, 2001 and newer. These models can also use PML P/N 10361 for a different fin pattern and less capacity. Click here for P/N 10361.

If you have a Dodge Ram with this axle, click here for our Dodge cover.

This diff cover has oil fill/level check hole and a drain hole with a magnetic plug to facilitate oil changes.

Volume: 1 qt. over stock

Click here for dimensions.

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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