PML designed this differential cover for the American Axle rear end on Duramax trucks with the Allison transmission. The cover has space at the top and includes longer bolts for the brake bracket.

This differential cover fits Chevrolet Silverado and GMC Sierra 2500HD & 3500 with the Duramax or 8.1 engine, 2001 and newer. These trucks can also use PML P/N 10361, which has a different fin pattern, less capacity and requires the brake bracket at the 12 o'clock position to be bent.

PML AAM 11.5" differential cover for GM trucks is designed for:

• 2001 and newer Sierra/Silverado 2500HD with Duramax diesel
• 2007 Sierra/Silverado 2500HD Classic with Duramax diesel
• 2001 to 2006 Sierra/Silverado 3500 with 8.1 V8 gas engine or Duramax diesel
• 2007 Sierra/Silverado 3500 Classic with 8.1 V8 gas engine or Duramax diesel
• 2007 and newer Sierra/Silverado 3500HD with Durmax diesel
• Some 2007 and newer Sierra/Silverado 3500HD with 6.0 V8 gas engine (some have the American Axle 10.5" differential)

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

This 2007 Chevy Silverado 3500 carries a heavy load with the help of this PML differential cover. The aluminum construction and extra capacity help keep the fluid cool for less wear and tear on the gears and seals. And it looks great.

PML American Axle differential cover shown in as-cast finish on a 2001 2500HD Allison Duramax Diesel.