Wehrli 01-19 Chevrolet Duramax/03-19 Dodge Cummins 11.5in AAM Rear Diff. Cover - WCFab Red

If you're looking to upgrade the rear differential cover on your heavy-duty truck, this fabricated aluminum cover from Wehrli Custom Fabrication is a solid option. It's built for the 11.5-inch AAM axle found in many Chevrolet Silverado, GMC Sierra, Dodge Ram, and Ram 2500/3500 models from 2001 through 2019 for GM and 2003 through 2018 for Dodge/Ram.

This cover is made from aluminum and is fabricated, meaning it's built from multiple pieces welded together for a strong and custom look. It's finished with a two-stage red powder coating that holds up well against road debris and the elements, and it includes stainless steel hardware for a clean installation. A drain plug is also integrated, making fluid changes much easier than on a stock cover.

Upgrading your differential cover can help protect the internal components from impacts and can also help keep your gear oil cooler by increasing the fluid capacity slightly. This Wehrli cover offers a noticeable improvement over the factory stamped steel unit.