aFe Street Series Rear Differential Cover

2018–2021 Jeep Wrangler JL with Dana M200 Rear Axle

Part #: 46-71090A

Overview

The aFe Street Series Rear Differential Cover is a high-quality upgrade designed specifically for the 2018 to 2021 Jeep Wrangler JL models equipped with the Dana M200 rear axle. Crafted to enhance durability and performance, this cover offers increased oil capacity and superior cooling capabilities compared to the factory cover. Ideal for Jeep enthusiasts seeking improved rear differential protection and extended component life, the aFe Street Series cover combines robust construction with smart engineering to keep your drivetrain running cooler and cleaner under demanding conditions.

Whether you’re tackling off-road trails or daily driving, this differential cover provides enhanced reliability and peace of mind by helping to maintain optimal gear oil temperature and cleanliness.

Key Features

Engineered for maximum protection and performance, the aFe Street Series Rear Differential Cover includes several advanced features:

• Constructed from durable cast aluminum for long-lasting strength and corrosion resistance
• Increased oil capacity compared to stock covers, allowing for better lubrication and heat dissipation over extended use
• Built-in internal and external machined fins that efficiently transfer heat from the gear oil to the surrounding air, improving cooling performance
• Neodymium magnetic drain plug designed to capture and hold metal particles, protecting gears from wear and damage
• Calibration plug preset to the factory oil level to prevent overfilling and ensure proper fluid volume
• Optional accessories available, including a deep reach magnetic fill plug (PN: 46-00002) and an oil level sight glass (PN: 46-00001) for enhanced monitoring and maintenance
• Precision fitment exclusively for Jeep Wrangler JL models with Dana M200 rear axles, ensuring easy installation and compatibility

Construction & Design

The aFe Street Series Rear Differential Cover is expertly crafted from premium cast aluminum, combining lightweight durability with excellent thermal conductivity. The raw finish with machined fins not only provides a rugged aesthetic but also maximizes surface area for superior heat dissipation. The internal fin design promotes efficient oil circulation within the differential housing, further aiding in temperature control. The inclusion of a neodymium magnetic drain plug demonstrates a focus on drivetrain protection by capturing microscopic metal debris before it can cause damage.

Every detail, from the calibration plug to the precision machining, reflects a commitment to quality and performance, making this cover a reliable upgrade for Jeep Wrangler owners who demand more from their vehicle’s rear differential.

Installation & Fitment

Installation of the aFe Street Series Rear Differential Cover is straightforward and designed to be a direct replacement for the factory cover on 2018–2021 Jeep Wrangler JL models equipped with the Dana M200 axle. No modifications are required, and the cover uses the existing mounting points for a secure fit. The included calibration plug ensures the correct oil level is maintained, simplifying the fill process and preventing overfilling. This cover is an ideal upgrade for those looking to enhance rear differential protection without complicated installation procedures.

What's Included

• aFe Street Series Rear Differential Cover (Raw finish with machined fins)
• Neodymium magnetic drain plug
• Calibration plug preset to factory oil level
• Installation hardware

Ideal For

This rear differential cover is perfect for Jeep Wrangler JL owners who want to improve the durability and cooling efficiency of their rear axle assembly. It is especially suited for off-road enthusiasts, daily drivers seeking enhanced drivetrain protection, and anyone looking to extend the life of their differential components through better heat management and contamination control.

Emissions Note

This product does not require a CARB Executive Order (EO#) and is compliant with emissions regulations.

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.