PPE Heavy-Duty Cast Aluminum Rear Differential Cover

2019–2024 Dodge Ram

238053020

Overview:

The PPE Heavy-Duty Cast Aluminum Rear Differential Cover is engineered specifically for Dodge Ram models from 2019 through 2024. Designed to enhance the durability and performance of your vehicle’s rear differential, this cover addresses the critical issue of heat buildup that can degrade differential fluid and accelerate wear on internal components. Ideal for truck owners who demand reliability and improved traction under heavy loads or off-road conditions, this differential cover offers superior heat dissipation and increased fluid capacity to protect your gears and bearings.

By upgrading to this PPE differential cover, you ensure longer-lasting differential fluid effectiveness, better protection for limited-slip clutch packs, and enhanced overall drivetrain efficiency. It’s a smart investment for anyone looking to maintain optimal differential performance and extend the life of their Ram’s rear axle components.

Key Features:

This heavy-duty differential cover incorporates advanced design elements and premium materials to deliver exceptional performance and protection:

• Constructed from high-grade A356.0-T6 cast aluminum alloy for superior strength and corrosion resistance
• Increases fluid capacity by 0.7 quarts, improving lubrication and cooling
• Half-inch external cooling fins maximize heat dissipation to maintain optimal fluid temperature
• Built-in internal windage scrapers reduce fluid churning, lowering heat buildup and parasitic loss
• Strong cross-bracing structure formed by vertical external fins enhances load distribution and impact resistance
• Factory-level positioned fill plug for easy and accurate fluid maintenance
• High-temperature-rated neodymium magnets in both fill and drain plugs capture ferrous particles to protect internal components
• Direct OEM replacement with reference part numbers 68458937AB, 68458937AA, and 68458238AA

Construction & Design:

The PPE differential cover is precision cast from A356.0-T6 aluminum alloy, a material known for its excellent strength-to-weight ratio and resistance to corrosion and thermal stress. The robust design features half-inch external cooling fins that significantly increase the surface area for heat dissipation, helping to maintain lower operating temperatures during demanding driving conditions.

Inside the cover, integrated windage scrapers are engineered to direct differential fluid precisely around the gears, minimizing fluid turbulence and reducing heat generation caused by excessive fluid churning. This design not only improves cooling efficiency but also enhances power transfer by reducing parasitic losses. The vertical fins also serve as structural reinforcements, providing added rigidity and impact resistance to protect the differential housing from damage.

Installation & Fitment:

The PPE Heavy-Duty Rear Differential Cover is a direct bolt-on replacement designed specifically for Dodge Ram trucks from 2019 to 2024. Installation requires no modifications and can be completed using standard hand tools. The cover includes factory-positioned fill and drain plugs, making fluid servicing straightforward and mess-free. This upgrade is suitable for both professional mechanics and experienced DIY enthusiasts looking to improve their vehicle’s rear differential durability and cooling.

What's Included:

• Heavy-duty cast aluminum rear differential cover
• Fill plug with high-temperature neodymium magnet
• Drain plug with high-temperature neodymium magnet
• Installation hardware
• Detailed installation instructions

Ideal For:

This differential cover is ideal for Dodge Ram owners who frequently tow, haul heavy loads, or drive off-road and require enhanced rear differential protection and cooling. It is also well-suited for enthusiasts seeking to maintain optimal limited-slip differential performance by preventing clutch pack degradation due to excessive heat. Whether you use your Ram for work, recreation, or daily driving, this PPE cover provides peace of mind through improved durability and efficiency.

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.