aFe Pro Series Rear Differential Cover

2019–2020 Ram Trucks

46-71150B

Overview:

The aFe Pro Series Rear Differential Cover is engineered specifically for 2019 to 2020 Ram trucks equipped with AAM 11.5, 11.8, or 12.0 axles. Designed to replace the factory differential cover, this high-performance upgrade enhances durability and cooling capacity, helping to protect your rear differential under demanding driving conditions. Ideal for truck owners who tow, haul, or drive off-road, the cover increases oil capacity and improves heat dissipation to maintain optimal gear lubrication and extend component life.

With its rugged construction and precision-machined cooling fins, the aFe Pro Series cover offers a reliable solution for those seeking to improve the longevity and performance of their Ram’s rear differential.

Key Features:

This rear differential cover combines advanced engineering with practical features to deliver superior protection and cooling:

• Constructed from durable cast aluminum with a black powder coat finish for corrosion resistance and long-lasting durability
• Machined cooling fins cast directly into the cover increase surface area for enhanced heat dissipation
• Increased oil capacity compared to the factory cover to improve lubrication and thermal management
• Dual neodymium magnetic drain plugs capture metal particles, providing maximum gear protection and extending differential life
• Large oil level sight glass allows for quick and accurate fluid level checks without removal
• Calibration plug set to factory oil level prevents overfilling and ensures proper fluid volume
• Precision fitment for AAM 11.5, 11.8, and 12.0 axles found in Ram trucks

Construction & Design:

The aFe Pro Series Rear Differential Cover is crafted from high-quality cast aluminum, chosen for its excellent strength-to-weight ratio and thermal conductivity. The black powder coat finish not only provides a sleek appearance but also protects against corrosion and environmental damage. The cover’s design incorporates machined fins that are cast into the aluminum, significantly increasing the surface area to dissipate heat more effectively than the stock cover.

Attention to detail is evident in the inclusion of dual neodymium magnetic plugs, which are strategically placed to capture metal debris circulating in the gear oil, helping to prevent premature wear. The large sight glass is engineered for durability and ease of use, allowing for quick visual inspection of fluid levels without the need to remove the cover or plugs.

Installation & Fitment:

Installation of the aFe Pro Series Rear Differential Cover is straightforward and designed to be a direct bolt-on replacement for the factory cover on 2019–2020 Ram trucks with AAM 11.5, 11.8, or 12.0 axles. No modifications or special tools are required, making it accessible for both professional mechanics and experienced DIY enthusiasts. The included calibration plug ensures the correct oil level is maintained, preventing overfilling and potential damage.

What's Included:

• aFe Pro Series Rear Differential Cover with machined cooling fins
• Dual neodymium magnetic drain plugs
• Large oil level sight glass
• Calibration plug set to factory oil level
• Installation hardware

Ideal For:

This rear differential cover is ideal for Ram truck owners who demand enhanced durability and cooling for their rear differential. It is especially suited for those who frequently tow heavy loads, engage in off-road driving, or operate their trucks in high-temperature environments where differential overheating is a concern. The aFe Pro Series cover helps maintain optimal gear oil temperature and cleanliness, contributing to longer differential service life and improved vehicle reliability.

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