Wehrli Rear Differential Cover

2003–2018 Dodge Ram 2500 / 2003–2018 Dodge Ram 3500

WCF100113-KIWI

Overview:

The Wehrli Rear Differential Cover is a precision-fabricated aluminum upgrade designed specifically for the AAM 11.5-inch rear axle found in Dodge Ram 2500 and 3500 models from 2003 through 2018. Engineered to provide superior protection and enhanced durability, this custom differential cover is ideal for truck owners who demand reliability and toughness from their drivetrain components. Whether you drive a Cummins diesel or Duramax-powered Ram, this cover offers peace of mind by reinforcing the axle housing against impacts and leaks.

With a vibrant Kiwi Green single-stage powder coat finish, the cover not only delivers rugged performance but also adds a distinctive aesthetic upgrade to your truck’s undercarriage. Stainless steel hardware and a built-in drain plug make maintenance easier and help extend the life of your differential fluid.

Key Features:

Designed for heavy-duty use and long-lasting performance, the Wehrli Rear Differential Cover includes the following features:

• Precision-fabricated from high-quality aluminum for strength and corrosion resistance
• Custom fit for the AAM 11.5-inch rear axle used in Dodge Ram 2500 and 3500 trucks (2003–2018)
• Durable Kiwi Green single-stage powder coating for superior protection and style
• Stainless steel hardware included to resist rust and ensure secure installation
• Integrated magnetic drain plug simplifies fluid changes and helps capture metal debris
• Increased fluid capacity to improve cooling and lubrication of differential components
• Reinforced design protects the differential housing from rocks, debris, and off-road hazards
• Compatible with both Cummins and Duramax diesel engines

Construction & Design:

The Wehrli Rear Differential Cover is expertly crafted from lightweight yet robust aluminum, providing a significant upgrade over factory stamped steel covers. Aluminum’s natural corrosion resistance ensures long-term durability, especially in harsh environments where moisture and road salt are common. The cover’s thick, reinforced walls add structural rigidity to the axle housing, reducing flex and potential damage under heavy loads or off-road conditions.

The powder-coated finish not only enhances corrosion protection but also resists chipping and fading, maintaining a fresh appearance over time. Stainless steel bolts secure the cover tightly to the axle, preventing leaks and simplifying future servicing.

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 and magnetic drain plug facilitate quick and clean fluid changes during routine maintenance.

This cover is engineered to fit perfectly on the AAM 11.5-inch rear axle, ensuring a secure seal and optimal protection without interfering with other drivetrain components.

What's Included:

• One fabricated aluminum rear differential cover with Kiwi Green powder coat finish
• Complete set of stainless steel mounting hardware
• Magnetic drain plug for fluid maintenance
• Installation instructions

Ideal For:

This differential cover is ideal for Dodge Ram 2500 and 3500 owners who use their trucks for heavy-duty towing, hauling, off-roading, or daily driving in demanding conditions. It is especially suited for enthusiasts looking to upgrade their drivetrain protection while adding a custom look to their vehicle. Whether you operate a Cummins or Duramax diesel, this cover enhances durability and helps maintain the longevity of your rear differential.

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.