aFe Pro Series Rear Differential Cover

2019–2023 Ram 2500 / 3500

Part #: 46-71151B

Overview

The aFe Pro Series Rear Differential Cover is a precision-engineered upgrade designed specifically for 2019 to 2023 Ram 2500 and 3500 trucks equipped with AAM 11.5, 11.8, or 12.0 axle assemblies. This robust cover enhances the durability and cooling efficiency of your rear differential, making it an essential component for truck owners who demand reliable performance under heavy-duty conditions. Whether you tow heavy loads, tackle off-road trails, or drive daily, the Pro Series cover increases oil capacity and improves heat dissipation to protect your differential gears and extend the life of drivetrain components.

Built to endure the harshest environments, this differential cover combines rugged construction with smart engineering features that maintain optimal operating temperatures and prevent premature wear. It offers Ram truck enthusiasts a dependable solution for improved drivetrain reliability and peace of mind.

Key Features

The aFe Pro Series Rear Differential Cover incorporates advanced design elements and premium materials to deliver superior performance and protection:

• All-aluminum construction for enhanced strength and corrosion resistance
• Cast-in cooling fins increase surface area for effective heat dissipation
• Increased oil capacity improves lubrication and thermal management
• Durable black powder coat finish with precision-machined fins for a sleek, rugged appearance
• Dual neodymium magnetic plugs capture metal debris to protect gears and bearings
• Large oil level sight glass allows easy monitoring of fluid levels without removal
• Calibration plug set to factory oil level prevents overfilling during maintenance
• Includes 4 quarts of PRO Guard D2 Synthetic 75W-90 gear oil formulated for high-performance applications
• Compatible with AAM 11.5, 11.8, and 12.0 axle assemblies found in Ram trucks

Construction & Design

The Pro Series differential cover is crafted from durable cast aluminum, selected for its excellent strength-to-weight ratio and resistance to corrosion. The black powder coat finish not only provides a tough protective layer but also enhances the cover’s aesthetic appeal with a refined, machined look. Integrated cooling fins are cast directly into the cover, maximizing heat dissipation by increasing the surface area exposed to airflow. This design helps maintain lower operating temperatures, which is critical for prolonging the life of differential components under heavy loads or extreme conditions.

Attention to detail is evident in the inclusion of dual neodymium magnetic plugs, which efficiently attract and hold metal particles suspended in the gear oil, preventing abrasive wear. The large sight glass offers a convenient way to check oil levels and condition without disassembly, while the calibration plug ensures the oil is filled to the precise factory specification, avoiding the risk of overfilling.

Installation & Fitment

Installation of the aFe Pro Series Rear Differential Cover is straightforward and designed to fit directly onto the factory mounting points of 2019–2023 Ram 2500 and 3500 trucks with AAM 11.5, 11.8, or 12.0 axles. No modifications are necessary, making it a direct bolt-on upgrade. The included synthetic gear oil simplifies the service process by providing the correct lubricant optimized for this application. This cover is an excellent choice for owners looking to upgrade their rear differential protection without complicated installation procedures.

What's Included

• aFe Pro Series Rear Differential Cover with black powder coat and machined fins
• Dual neodymium magnetic plugs
• Large oil level sight glass
• Calibration plug set to factory oil level
• 4 quarts of PRO Guard D2 Synthetic 75W-90 gear oil

Ideal For

This differential cover is ideal for Ram truck owners who demand enhanced durability and cooling for their rear differential. It is perfectly suited for those who frequently tow heavy loads, engage in off-road driving, or operate their trucks in demanding environments where heat buildup and gear wear are concerns. The aFe Pro Series cover provides peace of mind by improving gear protection and extending service intervals, making it a smart upgrade for enthusiasts and professionals alike.