Wehrli Rear Differential Cover

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

WCF100113-BR

Overview:

The Wehrli Rear Differential Cover is a precision-engineered upgrade designed specifically for Dodge Ram 2500 and 3500 models from 2003 to 2018. Crafted to fit the robust AAM 11.5-inch rear axle, this cover offers enhanced protection and durability for heavy-duty trucks equipped with Cummins or Duramax engines. Ideal for truck owners who demand superior strength and reliability from their drivetrain components, this cover safeguards your differential from off-road hazards, debris, and wear.

With a custom single-stage Bengal Red powder-coated finish, the cover not only delivers rugged performance but also adds a distinctive, aggressive look to your truck’s rear end. Whether you’re hauling heavy loads, towing, or tackling challenging terrain, the Wehrli Rear Differential Cover ensures your axle remains protected and performing at its best.

Key Features:

Engineered for durability and ease of maintenance, the Wehrli Rear Differential Cover offers a range of benefits:

• Precision fabricated from high-quality aluminum for superior strength and corrosion resistance
• Custom fit for the AAM 11.5-inch rear axle found in Dodge Ram 2500/3500 (2003–2018)
• Distinctive Bengal Red single-stage powder coating for long-lasting finish and visual appeal
• Includes stainless steel hardware and a built-in drain plug for convenient fluid changes
• Enhanced differential protection against impacts, debris, and environmental damage
• Improved heat dissipation to help maintain optimal differential operating temperatures
• Direct bolt-on installation with no modifications required
• Compatible with heavy-duty applications including towing and off-road use

Construction & Design

The Wehrli Rear Differential Cover is expertly fabricated from premium-grade aluminum, chosen for its excellent strength-to-weight ratio and resistance to rust and corrosion. This material ensures the cover withstands harsh conditions while minimizing added weight to the rear axle assembly. The cover’s design incorporates reinforced ribs and a contoured shape to provide maximum impact resistance and structural integrity.

Its vibrant Bengal Red powder coating is applied through a single-stage process, delivering a durable finish that resists chipping, fading, and corrosion. Stainless steel hardware complements the cover’s rugged construction, ensuring long-term reliability and ease of maintenance. The integrated drain plug simplifies fluid changes, reducing downtime and maintenance effort.

Installation & Fitment

Designed as a direct replacement for the factory rear differential cover on Dodge Ram 2500 and 3500 trucks from 2003 through 2018, installation is straightforward and requires no modifications. The cover bolts directly onto the AAM 11.5-inch rear axle housing using the included stainless steel hardware. This ensures a secure, leak-free fit that maintains the integrity of your differential assembly.

Installation can typically be completed with basic hand tools in under an hour, making it an accessible upgrade for both professional mechanics and experienced DIY enthusiasts. The built-in drain plug facilitates easy fluid changes during installation or routine maintenance.

What’s Included

• Wehrli fabricated aluminum rear differential cover
• Custom Bengal Red single-stage powder coating finish
• Stainless steel mounting hardware
• Integrated stainless steel drain plug
• Installation instructions

Ideal For:

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

• Owners who frequently tow heavy trailers or haul substantial payloads
• Off-road enthusiasts seeking added protection against rocks, mud, and debris
• Drivers looking to upgrade factory components for improved longevity and maintenance ease
• Anyone wanting to add a custom, aggressive look to their truck’s rear axle

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.