PPE 138041000 Heavy Duty Cast Aluminum Front Differential Cover with Raw Finish | 2011-2025 GM Silverado/Sierra 2500HD/3500HD

Features: - Raw finish for rugged, industrial look - Cast from A356-T6 heat-treated aluminum - Massive internal and external cooling fins - Increases fluid capacity by 3/4 quart - Neodymium magnetic fill plug captures debris - 1/8" NPT port for temp sensor - Retains OEM reusable gasket - Boosts cooling and extends fluid life - Zinc-plated stainless hardware included - Improves housing strength and durability - Compatible with 2011–2025 GM HD trucks - Backed by a limited lifetime warranty Major Upgrade In Durability and Cooling Efficiency If you’re putting your heavy-duty GM truck to work, keeping the front differential cool and protected is a smart move—and that’s exactly where the PPE Heavy Duty Cast Aluminum Front Differential Cover shines. Built for 2011–2025 Silverado and Sierra 2500HD/3500HD models, this cover is engineered to handle real-world abuse while helping extend the life of your front diff components, especially during long hauls, heavy towing, or tough trail days. This raw-finished version is all business. It’s cast from A356-T6 heat-treated aluminum, giving it excellent strength without the added weight of steel. What really sets it apart is the cooling capability. PPE didn’t hold back here—this cover is packed with some of the largest internal and external cooling fins in the industry. That means better heat dissipation, more stable fluid temps, and added confidence when you're pushing your truck in extreme conditions. Holds More Fluid Over Stock It also holds three-quarters of a quart more fluid than stock, offering extra protection on those long drives or hot summer days. PPE includes a high-strength Neodymium magnetic fill plug, which helps pull harmful metal particles out of the oil before they can circulate through the gears and bearings. There’s even a 1/8-inch port ready to accept a temperature probe if you’re monitoring temps through a gauge. Better yet, installation is straightforward—no need to source a special seal, since it’s designed to reuse the factory gasket. PPE also includes zinc-plated stainless hardware, so everything bolts up cleanly and resists corrosion down the road. Fits: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Sierra/Silverado 2500HD/3500HD