Wehrli Rear Differential Cover

Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (03-18)

WCF100113-BS

Overview:

The Wehrli Rear Differential Cover is a precision-engineered upgrade designed specifically for Dodge Ram 2500 and 3500 models from 2003 through 2018. Crafted to fit the robust AAM 11.5 rear axle, this cover offers enhanced protection and durability for your truck’s differential. Ideal for enthusiasts and professionals who demand reliability and strength from their drivetrain components, the Wehrli cover safeguards your differential against impacts, debris, and harsh off-road conditions.

Finished in a striking Bengal Silver custom single-stage powder coat, this cover not only improves functionality but also adds a sleek, polished look to your vehicle’s undercarriage. Whether you’re hauling heavy loads, towing, or tackling rugged terrain, this differential cover is engineered to maintain optimal performance and extend the life of your axle.

Key Features:

Designed with durability and performance in mind, the Wehrli Rear Differential Cover offers a range of features that set it apart from stock covers:

• Fabricated from high-quality aluminum for superior strength and corrosion resistance
• Custom fit for the AAM 11.5 rear axle found in Dodge Ram 2500 and 3500 trucks (2003–2018)
• Finished with a Bengal Silver single-stage powder coat for long-lasting protection and an attractive appearance
• Includes stainless steel hardware to prevent rust and ensure secure mounting
• Equipped with a convenient stainless steel drain plug for easy fluid changes and maintenance
• Engineered to provide increased fluid capacity, aiding in better heat dissipation and axle longevity
• Reinforced design to resist impacts from rocks, debris, and off-road hazards
• Compatible with both Cummins and Duramax diesel engines commonly found in these trucks

Construction & Design:

The Wehrli Rear Differential Cover is meticulously fabricated from premium-grade aluminum, chosen for its excellent strength-to-weight ratio and natural resistance to corrosion. This material ensures the cover can withstand the rigors of heavy-duty use without adding unnecessary weight to your vehicle. The cover’s design incorporates reinforced ribs and a thicker profile compared to factory covers, providing enhanced protection against dents and punctures.

The Bengal Silver powder coat finish not only enhances the cover’s aesthetic appeal but also creates a durable barrier against environmental elements such as moisture, salt, and dirt. Stainless steel hardware and a drain plug complement the build quality, offering rust-free longevity and simplifying routine maintenance tasks.

Installation & Fitment:

Installation of the Wehrli Rear Differential Cover is straightforward and designed to be a direct bolt-on replacement for the factory cover on Dodge Ram 2500 and 3500 trucks from 2003 to 2018. No modifications or special tools are required, making it accessible for both professional mechanics and experienced DIY enthusiasts. The included stainless steel hardware ensures a secure fit, while the drain plug facilitates easy fluid changes without removing the cover.

This cover is engineered to fit precisely on the AAM 11.5 rear axle, guaranteeing proper sealing and compatibility with the vehicle’s existing components. Its increased fluid capacity helps maintain optimal operating temperatures, contributing to the longevity and reliability of your differential.

What's Included:

• Wehrli fabricated aluminum rear differential cover in Bengal Silver
• Stainless steel mounting hardware
• Stainless steel drain plug
• Installation instructions

Ideal For:

This rear differential cover is perfect for Dodge Ram 2500 and 3500 owners who demand enhanced durability and protection for their drivetrain. It is especially suited for:

• Off-road enthusiasts seeking to protect their axle from trail hazards
• Heavy-duty truck users who tow or haul frequently
• Diesel truck owners with Cummins or Duramax engines looking for reliable aftermarket upgrades
• Anyone wanting to improve the appearance and longevity of their rear differential assembly

Wehrli Custom Fabrication (WCFab) is a diesel performance and metal fabrication specialist building upgraded hard parts and engineered solutions for Duramax, Cummins, and Power Stroke trucks. Known for high-quality fabrication and truck-focused product development, WCFab supports everything from tow rigs to race-oriented diesel builds where durability, airflow, and heat management matter.