Wehrli Rear Differential Cover

2003–2018 Dodge Ram 2500 / 3500 with AAM 11.5 Rear Axle

WCF100113-IBB

Overview:

The Wehrli Illusion Blueberry Rear Differential Cover is a premium upgrade designed specifically for Dodge Ram 2500 and 3500 models from 2003 to 2018 equipped with the AAM 11.5-inch rear axle. Crafted for heavy-duty use, this fabricated aluminum cover offers superior protection and durability compared to standard factory covers. It is an ideal choice for truck owners who demand enhanced strength and reliability for their drivetrain components, especially those running Duramax or Cummins diesel engines.

With its custom two-stage Illusion Blueberry powder coat finish, this differential cover not only provides rugged performance but also adds a distinctive visual appeal to your truck’s undercarriage. Whether you’re a daily driver, off-road enthusiast, or heavy hauler, this cover helps safeguard your rear differential from impacts, debris, and wear.

Key Features:

Engineered for durability and style, the Wehrli Illusion Blueberry Rear Differential Cover offers the following key features:

• Precision fabricated from high-quality aluminum for maximum strength and corrosion resistance
• Custom Illusion Blueberry two-stage powder coat finish for long-lasting protection and unique appearance
• Designed specifically for the AAM 11.5-inch rear axle found in Dodge Ram 2500/3500 and select GM HD trucks
• Includes stainless steel hardware and a built-in drain plug for easy maintenance and fluid changes
• Enhanced fluid capacity to improve differential cooling and extend gear oil life
• Direct bolt-on fitment with no modifications required, ensuring a hassle-free installation
• Compatible with heavy-duty diesel engines including Duramax and Cummins
• Provides superior protection against off-road hazards, rocks, and road debris

Construction & Design:

This rear differential cover is expertly fabricated from aircraft-grade aluminum, offering a lightweight yet incredibly strong solution to protect your axle housing. The aluminum construction resists rust and corrosion far better than traditional steel covers, ensuring long-term durability in harsh environments. Wehrli Custom Fabrication employs precision welding and machining techniques to maintain exact tolerances for a perfect fit on the AAM 11.5-inch axle.

The cover’s distinctive Illusion Blueberry powder coat finish is applied in a two-stage process, providing a deep, vibrant color that resists chipping, fading, and abrasion. Stainless steel hardware complements the cover’s corrosion resistance, while the integrated drain plug simplifies fluid changes and maintenance, reducing downtime and service costs.

Installation & Fitment:

The Wehrli Illusion Blueberry Rear Differential Cover is designed for direct bolt-on installation on Dodge Ram 2500 and 3500 trucks from 2003 through 2018 equipped with the AAM 11.5-inch rear axle. No modifications or special tools are required, making it an ideal upgrade for both professional mechanics and DIY enthusiasts. The included stainless steel hardware ensures a secure and leak-free seal, while the drain plug allows for quick and clean gear oil changes.

What's Included:

• Fabricated aluminum rear differential cover with Illusion Blueberry powder coat finish
• Stainless steel mounting hardware kit
• Integrated stainless steel drain plug
• Installation instructions

Ideal For:

This differential cover is perfect for Dodge Ram 2500 and 3500 owners who require enhanced axle protection and improved durability. It is especially suited for:

• Heavy-duty truck operators and fleet vehicles
• Off-road enthusiasts and trail riders
• Owners of trucks equipped with Duramax or Cummins diesel engines
• Anyone looking to upgrade from a factory differential cover to a more robust, corrosion-resistant solution

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.