PPE Rear Differential Cover

2001–2019 Chevrolet Silverado / 2001–2019 GMC Sierra / 2001–2005 Dodge Ram / 2008–2018 Ram

238051020

Overview:

The PPE Rear Differential Cover is a premium upgrade designed specifically for heavy-duty 11.5"-14-bolt rear axles found in Chevrolet Silverado, GMC Sierra, Dodge Ram, and Ram trucks from 2001 through 2019. Crafted to enhance the durability and performance of your vehicle’s differential, this cover addresses the critical issue of excessive heat buildup that can degrade differential fluid and accelerate wear on internal components.

Ideal for truck owners who demand reliability and longevity from their drivetrain, the PPE differential cover improves heat dissipation, increases fluid capacity, and protects vital gears and bearings. Whether you use your truck for towing, hauling, or off-road adventures, this cover helps maintain optimal differential performance under demanding conditions.

Key Features:

Engineered with advanced design elements, the PPE Rear Differential Cover offers a range of benefits that enhance your vehicle’s rear axle system:

• Constructed from high-grade A356.0-T6 cast aluminum for superior strength and lightweight durability
• Increases differential fluid capacity by 0.63 quarts to improve lubrication and cooling
• Half-inch external cooling fins maximize heat dissipation to prevent fluid breakdown and component wear
• Internal windage scrapers reduce fluid churning, lowering heat buildup and minimizing parasitic power loss
• Strong cross-bracing structure formed by vertical fins enhances load distribution and impact resistance
• Factory-level fill plug placement for easy fluid maintenance
• High-temperature neodymium magnets in both fill and drain plugs capture ferrous particles to protect gears and bearings
• Designed exclusively for vehicles equipped with AAM 11.5”-14 bolt axles
• Note: Not compatible with certain 2003–2012 Dodge Ram HD trucks with Anti-Spin Differential Rear Axles due to tone ring sensor interference

Construction & Design:

The PPE Rear Differential Cover is precision cast from aerospace-grade A356.0-T6 aluminum alloy, known for its excellent strength-to-weight ratio and corrosion resistance. The robust cast design incorporates half-inch external cooling fins that significantly increase surface area for heat dissipation, helping maintain lower operating temperatures during heavy use.

Inside the cover, integrated windage scrapers carefully manage fluid flow, ensuring consistent lubrication while reducing turbulence that can cause heat and drag. The vertical fins also serve as structural reinforcements, providing enhanced rigidity and impact resistance to protect the differential housing from road debris and rough terrain.

Both the fill and drain plugs are equipped with powerful neodymium magnets rated for high temperatures, which trap metal particles suspended in the fluid, preventing premature wear of the differential gears and bearings.

Installation & Fitment:

The PPE Rear Differential Cover is designed for a direct bolt-on installation with no modifications required on compatible vehicles. It fits Chevrolet Silverado and GMC Sierra models from 2001 to 2019, Dodge Ram trucks from 2001 to 2005, and Ram trucks from 2008 to 2018 equipped with AAM 11.5”-14 bolt rear axles.

Installation involves draining the existing differential fluid, removing the factory cover, and bolting on the PPE cover using the supplied hardware. The precisely positioned fill plug allows for easy refilling to the factory recommended fluid level. Note that this cover is not compatible with certain 2003–2012 Dodge Ram HD trucks equipped with Anti-Spin Differential Rear Axles due to tone ring sensor interference; for those applications, a different part number is recommended.

What's Included:

• One PPE Rear Differential Cover (cast aluminum)
• Fill plug with high-temperature neodymium magnet
• Drain plug with high-temperature neodymium magnet
• Installation hardware
• Detailed installation instructions

Ideal For:

This rear differential cover is perfect for truck owners who frequently tow heavy loads, drive off-road, or operate their vehicles in demanding environments where heat buildup can compromise differential performance. It is especially beneficial for those looking to extend the life of their differential components by improving fluid cooling and filtration, ensuring reliable traction and power transfer under all conditions.

Pacific Performance Engineering (PPE) develops heavy-duty and performance upgrades for trucks and diesel platforms, including differential covers, transmission pans, oiling and cooling components, and other durability-minded parts. PPE products are built to handle heat, load, and power—ideal for tow rigs and performance builds that need stronger hardware and better fluid control.