aFe Street Series Rear Differential Cover

2019–2020 Ram 2500 / 3500

Part #: 46-71150A

Overview

The aFe Street Series Rear Differential Cover is a precision-engineered upgrade designed specifically for 2019 to 2020 Ram 2500 and 3500 trucks equipped with GMCH 9.5 rear axles. Built to enhance the durability and cooling efficiency of your vehicle’s rear differential, this cover offers superior protection against the rigors of heavy towing, off-road driving, and demanding daily use. By increasing oil capacity and improving heat dissipation, it helps maintain optimal gear performance and extends the life of your differential components.

Whether you rely on your Ram truck for work or recreation, the aFe Street Series cover provides peace of mind by reducing the risk of overheating and gear wear. Its robust construction and advanced features ensure your drivetrain stays protected under the toughest conditions.

Key Features

Engineered to deliver enhanced protection and thermal management, the aFe Street Series Rear Differential Cover includes these standout features:

• Durable cast aluminum construction with a corrosion-resistant red powder coat finish for long-lasting durability
• Precision-machined cooling fins cast directly into the cover to increase surface area and improve heat dissipation
• Increased oil capacity to enhance lubrication and reduce operating temperatures during heavy use
• Dual neodymium magnetic drain and fill plugs that capture metal particles, preventing premature gear wear
• Large oil level sight glass for quick and accurate oil level monitoring without removal
• Calibration plug set to factory oil level specifications to prevent overfilling and ensure proper fluid volume
• Direct bolt-on fitment for GMCH 9.5 rear axles commonly found in Ram 2500 and 3500 trucks

Construction & Design

This rear differential cover is expertly crafted from high-quality cast aluminum, chosen for its excellent strength-to-weight ratio and superior heat dissipation capabilities. The red powder coat finish not only provides a striking appearance but also protects the cover from corrosion and environmental damage, ensuring long-term reliability.

The integrated machined fins are precision-engineered to maximize cooling efficiency by increasing the surface area exposed to airflow. This design helps maintain lower differential temperatures during heavy towing, off-roading, or extended highway driving. Additionally, the inclusion of dual neodymium magnetic plugs effectively traps metal shavings and debris suspended in the gear oil, safeguarding internal gears from premature wear.

The large sight glass allows for easy visual inspection of oil levels, simplifying routine maintenance and helping to prevent potential damage caused by low or excessive fluid levels.

Installation & Fitment

The aFe Street Series Rear Differential Cover is designed as a direct bolt-on replacement for 2019–2020 Ram 2500 and 3500 trucks equipped with GMCH 9.5 rear axles. Installation requires no modifications and can be completed using basic hand tools, making it an accessible upgrade for most vehicle owners. The included calibration plug ensures the oil level is set precisely to factory specifications, preventing overfilling and optimizing lubrication for maximum gear protection.

What's Included

• aFe Street Series Rear Differential Cover with machined cooling fins
• Dual neodymium magnetic drain and fill plugs
• Calibration plug set for factory oil level
• Installation hardware
• Detailed installation instructions

Ideal For

This rear differential cover is ideal for Ram 2500 and 3500 owners who demand enhanced durability and improved cooling performance from their drivetrain components. It is especially suited for enthusiasts who frequently tow heavy loads, engage in off-road adventures, or seek to extend the life of their rear differential by increasing oil capacity and improving heat dissipation. The aFe Street Series cover also benefits anyone looking to maintain factory-level oil volume while adding superior gear protection through magnetic plugs and convenient oil level monitoring.

aFe POWER (Advanced FLOW Engineering) offers dyno-proven intake, filtration, and exhaust upgrades aimed at measurable performance gains. The brand’s lineup is geared toward enthusiasts looking for better airflow, improved sound, and durable materials—from cold air intakes to stainless exhaust systems for street and track applications.