Wehrli Custom Fab AAM 11.5" Rear Differential Cover 01-19 GM 6.6L Duramax | 03-18 Ram 5.9/6.7L Cummins

Wehrli Custom Fab AAM 11.5" Rear Differential Cover 01-19 GM 6.6L Duramax | 03-18 Ram 5.9/6.7L CumminsIf you lifted your truck you might have found it exposed a massive issue. Your ugly rear axle and differential is now exposed for the world to see! Get a rear differential cover that upgrades the strength, durability, and style of your rear axle along with a fresh cool look with the Wehrli Custom Fabrication AAM 11. 5" Rear Differential Cover, designed for Duramax and Cummins powered heavy duty trucks. Built from high quality fabricated aluminum, this

If you lifted your truck you might have found it exposed a massive issue. Your ugly rear axle and differential is now exposed for the world to see! Get a rear differential cover that upgrades the strength, durability, and style of your rear axle along with a fresh cool look with the Wehrli Custom Fabrication AAM 11.5" Rear Differential Cover, designed for Duramax and Cummins-powered heavy-duty trucks. Built from high-quality fabricated aluminum, this cover is engineered to handle the demands of towing, off-road use, and high-performance applications while improving heat dissipation and long-term reliability. Choose from a variety of colors to customize your look!

NOTE: While some colors are kept in stock, other colors will take an extra 10-15 business day delay in powder coating.

Heavy-Duty Protection for Your Rear Axle

Your differential is one of the most critical components in your drivetrain and one of the most vulnerable. This WCFab differential cover replaces the thin factory unit with a robust, precision-built aluminum assembly that provides superior protection against impacts, debris, and extreme conditions.

Precision Fabricated Aluminum Construction

Each cover is laser cut, CNC bent, and fully TIG welded for maximum strength and a perfect fit. The aluminum construction not only adds durability but also helps dissipate heat more efficiently than stock covers, keeping your gear oil cooler under load.

Designed for Work, Towing & Performance

Whether you're hauling heavy loads, towing, or running larger tires, this differential cover helps maintain optimal gear oil temperatures and protects internal components. It’s a must-have upgrade for diesel truck owners who rely on their trucks for both work and performance driving.

Upgrade Your Rear End with Confidence

If you’re looking to protect your investment and improve the performance of your drivetrain, this AAM 11.5" Rear Differential Cover is a proven upgrade. Built to handle real-world abuse while adding a bold, custom appearance, it’s the perfect addition to any Duramax or Cummins build.