Wehrli Rear Differential Cover

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

WCF100113-IP

Overview:

The Wehrli Purple Rear Differential Cover is a premium 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 custom fabricated aluminum cover enhances the durability and protection of your truck’s differential. Ideal for owners of heavy-duty Dodge Ram trucks equipped with Cummins or Duramax engines, this cover combines rugged construction with a striking Illusion Purple two-stage powder coat finish, providing both functional and aesthetic improvements.

Whether you’re tackling tough off-road conditions or hauling heavy loads, the Wehrli differential cover offers superior protection against impacts, debris, and wear, helping to extend the life of your axle components. Its stainless steel hardware and integrated drain plug make maintenance easier and more efficient, ensuring your differential fluid stays clean and accessible.

Key Features:

Engineered for strength and style, the Wehrli Rear Differential Cover delivers a range of benefits designed to meet the demands of heavy-duty truck owners:

• Precision fabricated from high-quality aluminum for maximum durability and corrosion resistance
• Custom fit for AAM 11.5-inch rear axles found in Dodge Ram 2500 and 3500 trucks (2003–2018)
• Distinctive Illusion Purple two-stage powder coat finish for long-lasting color and protection
• Includes stainless steel hardware to resist rust and maintain secure mounting
• Integrated stainless steel drain plug simplifies fluid changes and maintenance
• Enhanced differential protection against rocks, debris, and off-road hazards
• Improves heat dissipation to help maintain optimal differential operating temperatures
• Designed to maintain factory fitment and clearances with no modifications required

Construction & Design:

The Wehrli Rear Differential Cover is expertly crafted from heavy-gauge aluminum, chosen for its excellent strength-to-weight ratio and resistance to corrosion. This fabrication process ensures a robust enclosure that can withstand impacts and harsh environmental conditions commonly encountered by heavy-duty trucks. The cover’s design incorporates reinforced ribs and a deep sump area to increase fluid capacity, which aids in cooling and lubrication of the differential gears.

Its signature Illusion Purple powder coat finish is applied through a two-stage process, providing a vibrant, durable surface that resists chipping, fading, and corrosion. The use of stainless steel hardware and a stainless drain plug further enhances longevity and ease of service, ensuring that the cover remains securely attached and functional over years of use.

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 equipped with the AAM 11.5-inch rear axle. No modifications or special tools are required, making it accessible for professional mechanics and experienced DIY enthusiasts alike. The included stainless steel hardware ensures a secure fit, and the integrated drain plug allows for quick fluid changes without removing the cover.

This cover fits Dodge Ram 2500 and 3500 models from 2003 through 2010, as well as Ram 2500 and 3500 models from 2011 through 2018, ensuring compatibility across multiple generations of these popular heavy-duty trucks.

What's Included:

• One fabricated aluminum rear differential cover with Illusion Purple powder coat finish
• Stainless steel mounting hardware kit
• 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 style for their trucks. It is especially suited for those who frequently operate in off-road environments, tow heavy trailers, or require increased durability for commercial or recreational use. The cover’s increased fluid capacity and improved cooling also benefit drivers looking to extend the life of their differential components under heavy load conditions.

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.