aFe Power Pro Series M220 Rear Diff Cover

2018–2026 Jeep Wrangler JL & 2020–2025 Gladiator JT Rubicon

Part #: 46-71001B

Overview

The aFe Power Pro Series M220 Rear Differential Cover is engineered to enhance the durability and performance of your Jeep Wrangler JL (2018–2026) and Gladiator JT Rubicon (2020–2025) rear axle. Designed for off-road enthusiasts and daily drivers alike, this cover offers superior protection against impacts and wear while improving heat dissipation and oil management. It is an essential upgrade for those seeking to extend the life of their differential and maintain optimal gear performance under demanding conditions.

Constructed with precision and attention to detail, the Pro Series cover integrates advanced features such as an oil sight glass and magnetic plugs, making maintenance easier and more reliable. Its increased oil capacity and cooling fins help keep your differential running cooler, reducing the risk of overheating during intense driving scenarios.

Key Features

The aFe Power Pro Series M220 Rear Diff Cover combines robust construction with innovative technology to deliver enhanced protection and performance:

• Durable cast aluminum construction with reinforced ribs for maximum strength and impact resistance
• Black powder-coated finish with machined fins for a distinctive, rugged appearance
• Increased oil capacity compared to stock covers, improving lubrication and cooling efficiency
• Built-in internal and external fins that transfer heat from the gear oil to the ambient air, reducing operating temperatures
• Pre-installed oil level sight glass for quick and easy oil inspection without removal
• Magnetic deep reach fill plug and magnetic drain plug to capture metal particles and contaminants, protecting internal components
• Calibration plug set to factory oil level to prevent overfilling and ensure proper lubrication
• Includes 3 quarts of PRO Guard D2 Synthetic 75W-90 gear oil, exceeding API GL-5 standards for both open and limited slip differentials
• All necessary hardware included for straightforward installation

Construction & Design

The Pro Series M220 Rear Diff Cover is crafted from high-quality cast aluminum, chosen for its excellent strength-to-weight ratio and corrosion resistance. Reinforced ribs are integrated into the design to provide additional structural integrity, protecting the differential from rocks, debris, and trail hazards. The black powder-coated finish not only enhances durability but also adds a sleek, aggressive look that complements the rugged styling of Jeep vehicles.

Machined cooling fins on both the interior and exterior surfaces maximize heat dissipation, helping to maintain optimal operating temperatures and extend the life of your differential components. The precision-engineered oil sight glass and magnetic plugs demonstrate a focus on practical maintenance and long-term reliability.

Installation & Fitment

Installation of the aFe Power Pro Series M220 Rear Diff Cover is designed to be straightforward and hassle-free. The kit includes all necessary hardware, allowing for a direct bolt-on replacement of the factory rear differential cover on 2018–2026 Jeep Wrangler JL and 2020–2025 Gladiator JT Rubicon models. No modifications or special tools are required, making it accessible for both professional installers and experienced DIY enthusiasts.

The included calibration plug ensures the oil level is set precisely to factory specifications, eliminating guesswork and preventing overfilling. This attention to detail helps maintain proper lubrication and protects your differential gears under all driving conditions.

What's Included

• aFe Power Pro Series M220 Rear Differential Cover (black powder-coated cast aluminum)
• PRO Guard D2 Synthetic 75W-90 Gear Oil (3 quarts)
• Magnetic deep reach fill plug
• Magnetic drain plug
• Oil level sight glass pre-installed
• Calibration plug
• All necessary mounting hardware

Ideal For

This rear differential cover is ideal for Jeep Wrangler JL and Gladiator JT Rubicon owners who demand enhanced axle protection and improved thermal management. Whether you frequently tackle off-road trails, engage in rock crawling, or simply want to upgrade your vehicle’s durability and maintenance convenience, the aFe Power Pro Series M220 Rear Diff Cover delivers reliable performance and peace of mind.

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.