Wehrli Rear Differential Cover

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

WCF100113-FTB

Overview:

The Wehrli Fine Texture Black Rear Differential Cover is a premium upgrade designed specifically for Dodge Ram 2500 and 3500 models from 2003 through 2018. Crafted for vehicles equipped with the AAM 11.5-inch rear axle, this cover offers enhanced protection and durability for your truck’s differential. Ideal for owners who demand reliability and rugged performance, it safeguards the differential housing against impacts, debris, and corrosion while adding a sleek, custom appearance.

Whether you use your Ram for heavy-duty towing, off-road adventures, or daily driving, this differential cover provides peace of mind by reinforcing a critical drivetrain component. Its fine texture black powder-coated finish ensures long-lasting resistance to wear and environmental elements.

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)
• Fine texture black single-stage powder coating provides excellent corrosion resistance and a rugged appearance
• Includes stainless steel hardware to prevent rust and ensure secure installation
• Integrated stainless steel drain plug for easy fluid changes and maintenance
• Designed to improve differential cooling by increasing fluid capacity and surface area
• Compatible with heavy-duty diesel engines such as Cummins and Duramax-equipped trucks
• Enhances the structural integrity of the differential housing to resist damage from off-road impacts

Construction & Design:

This differential cover is expertly fabricated from aircraft-grade aluminum, chosen for its excellent strength, lightweight properties, and resistance to corrosion. The fine texture black powder coating is applied in a single stage to create a durable, uniform finish that withstands harsh environmental conditions and road debris. The cover’s design incorporates reinforced ribs and increased fluid volume capacity, which help dissipate heat more effectively and protect internal gears and bearings.

All mounting hardware is made from stainless steel, ensuring long-term durability and preventing rust in wet or salty conditions. The integrated drain plug simplifies routine maintenance, allowing for quick and clean fluid changes without removing the entire cover.

Installation & Fitment:

The Wehrli Rear Differential Cover is designed for a direct bolt-on installation with no modifications required. It fits Dodge Ram 2500 and 3500 models from 2003 to 2010 as well as Ram 2500 and 3500 models from 2011 to 2018 equipped with the AAM 11.5-inch rear axle. Installation typically requires basic hand tools and can be completed in under an hour by a professional or experienced DIYer. The included stainless steel hardware ensures a secure and leak-free fit.

What’s Included

• One fabricated aluminum rear differential cover with fine texture black powder coating
• Stainless steel mounting hardware kit
• Stainless steel drain plug
• Installation instructions

Ideal For:

This differential cover is perfect for Dodge Ram 2500 and 3500 owners who want to upgrade their truck’s rear axle protection. It is especially suited for:

• Heavy-duty truck enthusiasts seeking enhanced durability and reliability
• Off-road drivers who require extra protection against rocks and trail debris
• Towing and hauling professionals who demand robust drivetrain components
• Owners of diesel-powered Rams with Cummins or Duramax engines looking to improve differential cooling and maintenance ease
• Anyone wanting a custom, rugged appearance with a fine texture black finish

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.