Wehrli Rear Differential Cover

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

WCF100113-BRZ

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 AAM 11.5-inch rear axle, this fabricated aluminum cover offers enhanced protection and durability for your truck’s differential. Ideal for truck owners who demand reliability and toughness, the Wehrli cover safeguards critical drivetrain components from impact damage and contamination during heavy-duty use.

Whether you’re towing, hauling, or off-roading, this differential cover provides peace of mind by reinforcing the rear axle housing. Its robust construction and corrosion-resistant finish ensure long-lasting performance under harsh conditions, making it a smart investment for maintaining your truck’s drivetrain integrity.

Key Features:

Engineered for strength and durability, the Wehrli Rear Differential Cover delivers several key benefits:

• Precision-fabricated from high-quality aluminum for superior strength-to-weight ratio
• Custom fit for the AAM 11.5-inch rear axle found in Dodge Ram 2500 and 3500 trucks (2003–2018)
• Brizzle Blue custom single-stage powder coating provides excellent corrosion resistance and a sleek finish
• Includes stainless steel hardware for enhanced durability and rust resistance
• Integrated stainless steel drain plug for easy fluid changes and maintenance
• Designed to increase fluid capacity, improving cooling and lubrication of differential components
• Reinforced structure protects against impacts from rocks, debris, and rough terrain
• Compatible with heavy-duty diesel engines such as Duramax and Cummins

Construction & Design:

The Wehrli Rear Differential Cover is expertly fabricated from premium-grade aluminum, chosen for its lightweight yet rugged properties. This material resists corrosion and dissipates heat efficiently, helping to maintain optimal operating temperatures within the differential. The cover’s design incorporates reinforced ribs and a thick base plate to withstand off-road impacts and heavy loads without bending or cracking.

Finished with a durable Brizzle Blue powder coat, the cover not only resists rust and environmental wear but also adds a custom aesthetic touch to your truck’s undercarriage. Stainless steel fasteners and a built-in drain plug complete the design, ensuring long-term reliability and ease of service.

Installation & Fitment:

Installation of the Wehrli Rear Differential Cover is straightforward and requires no modifications to your vehicle. It is engineered as a direct bolt-on replacement for the factory differential cover on Dodge Ram 2500 and 3500 trucks equipped with the AAM 11.5-inch rear axle from model years 2003 through 2018. The included stainless steel hardware ensures a secure and leak-free fit.

Routine maintenance is simplified thanks to the integrated drain plug, allowing quick fluid changes without removing the entire cover. This feature is especially beneficial for trucks subjected to heavy-duty or off-road use, where frequent differential servicing is recommended.

What's Included:

• Wehrli fabricated aluminum rear differential cover
• Stainless steel mounting hardware
• Stainless steel integrated drain plug
• Installation instructions

Ideal For:

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

• Heavy-duty towing and hauling applications
• Off-road enthusiasts seeking added impact resistance
• Truck owners looking to increase differential fluid capacity and cooling
• Those who want a corrosion-resistant, long-lasting upgrade over the factory cover
• Owners of diesel-powered trucks such as those equipped with Duramax or Cummins engines

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.