aFe Pro Series Rear Diff Cover

2020–2025 Jeep Gladiator with Dana M220 Rear Axle

Part #: 46-71190B

Overview

The aFe Pro Series Rear Differential Cover is a premium upgrade designed specifically for the 2020 to 2025 Jeep Gladiator equipped with the Dana M220 rear axle. Engineered to enhance durability, cooling, and protection, this rear diff cover is ideal for off-road enthusiasts and performance drivers who demand reliability under extreme conditions. Its increased oil capacity and advanced cooling features ensure your differential operates at optimal temperatures, extending component life and improving overall drivetrain performance.

Built to withstand harsh environments, the aFe Pro Series cover offers superior protection against impacts and contamination while providing easy maintenance access. Whether you’re tackling rugged trails or daily driving, this cover delivers peace of mind and enhanced functionality.

Key Features

Designed with precision and performance in mind, the aFe Pro Series Rear Diff Cover includes several advanced features that set it apart from the stock cover:

• Constructed from durable cast aluminum for strength and corrosion resistance
• Black powder coat finish with machined fins for a sleek appearance and improved heat dissipation
• Built-in internal and external fins that transfer heat from the gear oil to the outside air, maximizing cooling efficiency
• Increased oil capacity compared to the factory cover, allowing for better lubrication and longer service intervals
• Dual neodymium magnetic plugs (drain and fill) that capture metal particles and debris to protect gears and bearings
• Large oil level sight glass for quick and easy inspection without removal
• Calibration plug preset to factory oil level to prevent overfilling and ensure proper lubrication
• Includes sway bar spacers to maintain proper suspension geometry after installation
• Specifically engineered to fit Dana M220 rear axles found in Jeep Gladiator models from 2020 to 2025

Construction & Design

The aFe Pro Series Rear Differential Cover is crafted from high-quality cast aluminum, providing a robust and lightweight solution that resists corrosion and impact damage. Its black powder coat finish not only enhances durability but also adds a refined, aggressive look to your vehicle’s undercarriage. The precision-machined fins on both the exterior and interior surfaces increase the surface area for heat dissipation, effectively lowering the temperature of the gear oil during demanding driving conditions.

Attention to detail is evident in the inclusion of dual neodymium magnetic plugs, which are strategically positioned to capture metal shavings and contaminants, preventing premature wear of internal components. The large sight glass allows for quick visual checks of oil level and condition, simplifying maintenance routines.

Installation & Fitment

Installation of the aFe Pro Series Rear Diff Cover is straightforward and designed to be a direct bolt-on replacement for the factory cover on Jeep Gladiator models equipped with the Dana M220 rear axle from 2020 through 2025. No modifications to the axle or vehicle are required. The included sway bar spacers ensure that suspension geometry remains correct after installation, maintaining vehicle handling and ride quality.

For best results, it is recommended to drain and replace the differential fluid during installation, using the calibration plug as a guide to fill to the proper oil level. This cover is engineered to fit precisely, ensuring a secure seal and long-lasting performance.

What's Included

• aFe Pro Series Rear Differential Cover (Black with Machined Fins)
• Dual neodymium magnetic drain and fill plugs
• Large oil level sight glass
• Calibration plug preset to factory oil level
• Sway bar spacers
• Installation hardware

Ideal For

This rear differential cover is perfect for Jeep Gladiator owners who seek enhanced durability and cooling for their Dana M220 rear axle. It is especially suited for off-road enthusiasts, overlanders, and performance drivers who demand reliable gear protection and improved thermal management under heavy loads and extreme conditions. If you want to extend the life of your differential and maintain optimal performance, the aFe Pro Series Rear Diff Cover is an excellent upgrade choice.

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.