Pacific Performance Engineering - PPE HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover for Chevy/GMC (2011-26) 6.6L 2500HD/3500HD Gas (Brushed)

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PPE HD 12-Bolt Heavy-Duty Cast Aluminum Front Differential Cover for Chevy/GMC (2011-26) 6.6L 2500HD/3500HD Gas (Brushed)

SKU: 138041010

Excessive heat can degrade the protective qualities of differential fluid, leading to accelerated wear of gears and bearings. In limited-slip differentials, constant high temperatures can break down clutch packs and friction modifiers, resulting in reduced efficiency and compromised traction control.

Cast from high-grade A356.0-T6 aluminum alloy, the PPE differential cover adds .75 quart of fluid capacity and features half-inch external cooling fins for long-lasting heat management and performance.

Built-in windage scrapers inside the PPE cover ensure precise fluid distribution around the gears. By reducing excessive fluid churning, these scrapers lower heat buildup and minimize parasitic loss, promoting more efficient power transfer. Together with the vertical external fins, they form a strong cross-bracing structure that improves load distribution and enhances impact resistance.

The fill plug is precisely positioned at the factory level and features a high-temperature-rated neodymium magnet that captures ferrous particles for added protection.

OEM Part Number for Reference: GM 20768577, 84756922

Availability:

Was: $259.99

Sale: $233.99

Save: 10%

Save: $26.00

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Description

Features:
•Premium A356.0-T6 heat-treated cast aluminum alloy – a high-strength, thermally conductive material
•Precision-cast using permanent steel molds for a smooth, consistent finish and high dimensional accuracy
•Increases oil capacity by 0.75 quart for higher thermal capacity
•Half-inch external fins improve heat dissipation, lower differential fluid temperature, and increase impact resistance
•Precision-placed internal windage scrapers prevent excessive churning, reducing heat generation, fluid aeration, and power loss
•External fins and internal scrapers work together to form an ultra-strong Cross-Bracing structure
•Cast-in gussets for additional differential housing flange support and increased rigidity
•304 Stainless steel fill plug with built-in high temperature rated neodymium magnet and Viton O-ring

Fitment:
2026 GMC Sierra 3500HD 6.6L V8 Gas
2026 GMC Sierra 2500HD 6.6L V8 Gas
2026 Chevrolet Silverado 3500HD 6.6L V8 Gas
2026 Chevrolet Silverado 2500HD 6.6L V8 Gas
2025 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2025 GMC Sierra 3500HD 6.6L V8 Gas
2025 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2025 GMC Sierra 2500HD 6.6L V8 Gas
2025 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2025 Chevrolet Silverado 3500HD 6.6L V8 Gas
2025 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2025 Chevrolet Silverado 2500HD 6.6L V8 Gas
2024 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2024 GMC Sierra 3500HD 6.6L V8 Gas
2024 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2024 GMC Sierra 2500HD 6.6L V8 Gas
2024 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2024 Chevrolet Silverado 3500HD 6.6L V8 Gas
2024 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2024 Chevrolet Silverado 2500HD 6.6L V8 Gas
2023 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2023 GMC Sierra 3500HD 6.6L V8 Gas
2023 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2023 GMC Sierra 2500HD 6.6L V8 Gas
2023 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2023 Chevrolet Silverado 3500HD 6.6L V8 Gas
2023 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2023 Chevrolet Silverado 2500HD 6.6L V8 Gas
2022 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2022 GMC Sierra 3500HD 6.6L V8 Gas
2022 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2022 GMC Sierra 2500HD 6.6L V8 Gas
2022 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2022 Chevrolet Silverado 3500HD 6.6L V8 Gas
2022 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2022 Chevrolet Silverado 2500HD 6.6L V8 Gas
2021 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2021 GMC Sierra 3500HD 6.6L V8 Gas
2021 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2021 GMC Sierra 2500HD 6.6L V8 Gas
2021 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2021 Chevrolet Silverado 3500HD 6.6L V8 Gas
2021 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2021 Chevrolet Silverado 2500HD 6.6L V8 Gas
2020 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2020 GMC Sierra 3500HD 6.6L V8 Gas
2020 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2020 GMC Sierra 2500HD 6.6L V8 Gas
2020 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2020 Chevrolet Silverado 3500HD 6.6L V8 Gas
2020 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2020 Chevrolet Silverado 2500HD 6.6L V8 Gas
2019 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2019 GMC Sierra 3500HD 6.0L V8 Gas
2019 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2019 GMC Sierra 2500HD 6.0L V8 Gas
2019 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2019 Chevrolet Silverado 3500HD 6.0L V8 Gas
2019 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2019 Chevrolet Silverado 2500HD 6.0L V8 Gas
2018 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2018 GMC Sierra 3500HD 6.0L V8 Gas
2018 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2018 GMC Sierra 2500HD 6.0L V8 Gas
2018 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2018 Chevrolet Silverado 3500HD 6.0L V8 Gas
2018 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2018 Chevrolet Silverado 2500HD 6.0L V8 Gas
2017 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2017 GMC Sierra 3500HD 6.0L V8 Gas
2017 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2017 GMC Sierra 2500HD 6.0L V8 Gas
2017 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2017 Chevrolet Silverado 3500HD 6.0L V8 Gas
2017 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2017 Chevrolet Silverado 2500HD 6.0L V8 Gas
2016 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2016 GMC Sierra 3500HD 6.0L V8 Gas
2016 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2016 GMC Sierra 2500HD 6.0L V8 Gas
2016 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2016 Chevrolet Silverado 3500HD 6.0L V8 Gas
2016 Chevrolet Silverado 2500HD 6.0L V8 Gas
2015 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2015 GMC Sierra 3500HD 6.0L V8 Gas
2015 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2015 GMC Sierra 2500HD 6.0L V8 Gas
2015 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2015 Chevrolet Silverado 3500HD 6.0L V8 Gas
2015 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2015 Chevrolet Silverado 2500HD 6.0L V8 Gas
2014 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2014 GMC Sierra 3500HD 6.0L V8 Gas
2014 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2014 GMC Sierra 2500HD 6.0L V8 Gas
2014 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2014 Chevrolet Silverado 3500HD 6.0L V8 Gas
2014 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2014 Chevrolet Silverado 2500HD 6.0L V8 Gas
2013 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2013 GMC Sierra 3500HD 6.0L V8 Gas
2013 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2013 GMC Sierra 2500HD 6.0L V8 Gas
2013 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2013 Chevrolet Silverado 3500HD 6.0L V8 Gas
2013 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2013 Chevrolet Silverado 2500HD 6.0L V8 Gas
2012 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2012 GMC Sierra 3500HD 6.0L V8 Gas
2012 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2012 GMC Sierra 2500HD 6.0L V8 Gas
2012 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2012 Chevrolet Silverado 3500HD 6.0L V8 Gas
2012 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2012 Chevrolet Silverado 2500HD 6.0L V8 Gas
2011 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2011 GMC Sierra 3500HD 6.0L V8 Gas
2011 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2011 GMC Sierra 2500HD 6.0L V8 Gas
2011 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2011 Chevrolet Silverado 3500HD 6.0L V8 Gas
2011 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2011 Chevrolet Silverado 2500HD 6.0L V8 Gas