aFe Street Series Differential Cover

1997–2018 Jeep Wrangler 2.5L I4 / 3.6L V6 / 4.0L I6 / 3.8L V6

Part #: 46-71131B

Overview

The aFe Street Series Differential Cover is engineered to provide superior protection and enhanced performance for the front differential of Jeep Wrangler models spanning from 1997 to 2018. Designed specifically for various engine configurations including the 2.5L I4, 3.6L V6, 4.0L I6, and 3.8L V6, this cover offers a robust upgrade over the factory component. Ideal for off-road enthusiasts and daily drivers alike, it combines durability with functional design to safeguard your axle’s differential while improving thermal management and fluid capacity.

With a focus on strength, cooling efficiency, and ease of maintenance, this differential cover is a reliable choice for Jeep owners seeking to extend the life of their drivetrain components under demanding conditions.

Key Features

The aFe Street Series Differential Cover integrates advanced features to optimize differential protection and performance:

• Constructed from durable cast aluminum with reinforced ribs for maximum strength and impact resistance.
• Black powder-coated finish with precision-machined fins for a distinctive appearance and enhanced heat dissipation.
• Increased oil capacity compared to stock covers, allowing for improved lubrication and longer service intervals.
• Built-in internal and external cooling fins that efficiently transfer heat from the gear oil to the surrounding air.
• Pre-installed oil level sight glass for quick and accurate fluid level inspection without removal.
• Magnetic drain plug and deep reach fill plug designed to capture metal particles and contaminants, protecting internal components.
• Calibration plug preset to factory oil level to prevent overfilling and ensure optimal fluid volume.
• Includes 2 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

Crafted from high-quality cast aluminum, the aFe Street Series Differential Cover is engineered for durability and longevity. The reinforced ribbing enhances structural integrity, protecting the differential from impacts and harsh off-road conditions. The black powder-coated finish not only provides corrosion resistance but also adds a sleek, aggressive look to the front axle assembly.

Machined cooling fins on both the interior and exterior surfaces maximize heat dissipation, helping to maintain optimal operating temperatures for the gear oil. This thermal management is critical for preventing premature wear and maintaining consistent differential performance during extended use.

Installation & Fitment

Installation is designed to be simple and hassle-free, with all required hardware included. The cover is a direct bolt-on replacement for the front differential on Jeep Wrangler models from 1997 through 2018, covering multiple engine options including the 2.5L I4, 3.6L V6, 4.0L I6, and 3.8L V6. No modifications or special tools are necessary, making it accessible for both professional mechanics and experienced DIY enthusiasts.

What's Included

• aFe Street Series Differential Cover with machined fins and black powder coat
• PRO Guard D2 Synthetic 75W-90 Gear Oil (2 quarts)
• Magnetic drain plug and deep reach fill plug
• Calibration plug preset to factory oil level
• Oil level sight glass pre-installed
• Complete installation hardware kit

Ideal For

This differential cover is perfect for Jeep Wrangler owners who demand enhanced durability and cooling for their front differential. Whether you frequently tackle off-road trails, engage in heavy towing, or simply want to upgrade your vehicle’s drivetrain protection, the aFe Street Series Differential Cover delivers reliable performance and peace of mind. It is especially suited for those running factory or mild performance builds who want a maintenance-friendly solution with improved fluid capacity and thermal management.

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.