Wehrli Rear Differential Cover

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

WCF100113-FB

Overview:

The Wehrli Flat Black Rear Differential Cover is a premium upgrade designed specifically for Dodge Ram 2500 and 3500 models from 2003 through 2018. Crafted to fit the AAM 11.5-inch rear axle, this cover offers enhanced protection and durability for heavy-duty trucks equipped with Duramax or Cummins engines. Ideal for truck owners seeking to reinforce their differential housing against off-road hazards, debris, and wear, this cover combines rugged construction with a sleek, custom flat black powder-coated finish.

Whether you use your Ram for towing, hauling, or demanding worksite conditions, the Wehrli differential cover provides peace of mind by safeguarding one of the most critical drivetrain components. Its robust design helps prevent costly damage and extends the life of your rear differential.

Key Features:

Engineered for strength and reliability, the Wehrli Rear Differential Cover offers several standout features:

• Precision-fabricated from high-grade aluminum for superior strength and lightweight durability
• Custom single-stage flat black powder coating for corrosion resistance and a clean, aggressive 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 to resist rust and maintain secure fitment over time
• Integrated drain plug for easy differential fluid changes and maintenance
• Enhanced structural rigidity to protect the differential from impacts and off-road hazards
• Direct bolt-on installation with no modifications required
• Compatible with heavy-duty applications including towing, hauling, and off-road use

Construction & Design:

The Wehrli differential cover is expertly fabricated from aircraft-quality aluminum, chosen for its excellent strength-to-weight ratio and resistance to corrosion. The cover’s flat black powder coating is applied through a custom single-stage process, ensuring a durable finish that withstands harsh environmental conditions and resists chipping or fading.

Designed with precision to fit the AAM 11.5-inch rear axle, the cover features reinforced ribs and a thick aluminum plate to absorb impacts from rocks, debris, and rough terrain. Stainless steel hardware is included to prevent rust and maintain a secure, long-lasting seal. The integrated drain plug simplifies fluid changes, reducing maintenance time and effort.

Installation & Fitment:

Installation of the Wehrli Rear Differential Cover is straightforward and requires no special modifications. It bolts directly onto the factory mounting points of the AAM 11.5-inch rear axle found in Dodge Ram 2500 and 3500 models from 2003 to 2018. The included stainless steel hardware ensures a tight, leak-free fit. This cover is compatible with trucks equipped with Duramax or Cummins engines and is suitable for both work and recreational use.

What's Included:

• One fabricated aluminum rear differential cover with flat black 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 demand enhanced protection for their rear axle. It is especially suited for:

• Heavy-duty towing and hauling applications
• Off-road enthusiasts seeking to protect their drivetrain
• Truck owners looking to upgrade factory differential covers for improved durability
• Drivers who perform regular maintenance and want easier fluid changes

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.