aFe Pro Series Rear Differential Cover

2018–2026 Jeep Gladiator

Part #: 46-71191B

Overview

The aFe Pro Series Rear Differential Cover is a premium upgrade designed specifically for the 2018 through 2026 Jeep Gladiator. Engineered to provide superior protection and enhanced cooling for your rear differential, this cover is ideal for drivers who demand durability and reliability in both off-road and daily driving conditions. By increasing oil capacity and improving heat dissipation, it helps maintain optimal lubrication and extends the life of your differential components under heavy loads and challenging terrain.

Constructed from high-quality cast aluminum with a sleek black powder coat finish and machined fins, this differential cover not only delivers exceptional performance but also adds a rugged, aggressive look to your Jeep Gladiator’s undercarriage.

Key Features

Designed for strength, cooling efficiency, and ease of maintenance, the aFe Pro Series Rear Differential Cover includes the following advanced features:

• Durable cast aluminum construction with reinforced ribs for maximum strength and impact resistance
• Increased oil capacity compared to the factory cover for improved lubrication and longer service intervals
• Internal and external machined fins that maximize heat dissipation to keep gear oil temperatures lower
• Pre-installed oil level sight glass for quick and convenient oil inspection without removal
• Magnetic deep reach fill and drain plugs that capture metal particles to protect internal components from wear
• Calibration plug set to factory oil level to prevent overfilling and ensure proper fluid volume
• Includes 3 quarts of PRO Guard D2 synthetic 75W-90 gear oil, exceeding API GL-5 standards for both open and limited slip differentials
• Finished in black powder coat with machined fins for a rugged, high-performance appearance
• Includes sway bar spacers to ensure proper fitment and installation

Construction & Design

The rear differential cover is precision cast from high-grade aluminum, offering a lightweight yet incredibly strong housing that resists dents and deformation from off-road impacts. Reinforced ribs enhance structural integrity, ensuring the cover withstands harsh terrain and heavy use without compromising durability.

The black powder-coated finish provides excellent corrosion resistance and a clean, durable surface that complements the aggressive styling of the Jeep Gladiator. Machined fins on both the interior and exterior surfaces increase the surface area to improve heat transfer, effectively lowering gear oil temperatures during extended driving, towing, or off-road excursions. This advanced cooling design helps maintain optimal lubrication properties and protects differential components from premature wear caused by excessive heat.

Installation & Fitment

Installation is straightforward and requires no modifications, as this cover is a direct bolt-on replacement for the factory rear differential cover. All necessary mounting hardware is included, along with sway bar spacers to ensure proper alignment and fitment. The included calibration plug allows you to fill the gear oil to the exact factory specification, eliminating guesswork and preventing overfilling.

This differential cover is specifically designed to fit Jeep Gladiator models from 2018 through 2026, including popular trims such as Rubicon, Mojave, Overland, Sport, Willys, and more. It is engineered to work with the Dana M220 rear differential, ensuring perfect compatibility and reliable performance.

What's Included

• aFe Pro Series Rear Differential Cover with black powder coat and machined fins
• 3 quarts of PRO Guard D2 synthetic 75W-90 gear oil
• Magnetic deep reach fill plug
• Magnetic drain plug
• Calibration plug set to factory oil level
• Oil level sight glass pre-installed
• All necessary mounting hardware
• Sway bar spacers for proper installation

Ideal For

This rear differential cover is perfect for Jeep Gladiator owners who want to enhance the durability and cooling performance of their drivetrain. Whether you frequently tackle off-road trails, tow heavy loads, or simply want to upgrade your vehicle’s reliability and appearance, the aFe Pro Series Rear Differential Cover offers a robust solution that extends the life of your differential and improves overall vehicle performance.

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.