Description
The aFe POWER Pro Series Rear Differential Cover (Black with Machined Fins) is engineered to provide maximum strength, superior cooling, and enhanced protection for GM heavy-duty trucks equipped with AAM 11.5–14 bolt rear axles. Designed for both diesel and gas applications, this differential cover is a direct-fit upgrade for demanding towing, hauling, off-road, and high-performance use.
Constructed from durable cast aluminum with reinforced ribbing, the Pro Series differential cover delivers exceptional rigidity to reduce housing flex while protecting internal differential components from heat and impact. The integrated internal and external cooling fins increase surface area, efficiently transferring heat from the gear oil to ambient air to maintain optimal operating temperatures under heavy load.
Finished in a wrinkle-black powder coat with precision-machined fins, this cover combines corrosion resistance with an aggressive, performance-inspired appearance. An increased oil capacity over the factory cover ensures improved lubrication and thermal stability over extended driving durations.
For advanced protection and easy maintenance, aFe POWER equips this cover with dual neodymium magnetic plugs to capture harmful metal particles, along with a deep-reach magnetic fill plug. A large oil level sight glass, pre-installed at the factory, allows for quick visual inspections, while the calibration plug set to the factory oil level eliminates the risk of overfilling during service.
Supplied with all necessary installation hardware, the aFe POWER Pro Series Rear Differential Cover is built to meet the brand’s commitment to power, performance, protection, and long-term value—making it an ideal upgrade for GM HD truck owners who demand reliability and performance.
Key Features & Benefits
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Durable cast aluminum construction with reinforced ribs
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Wrinkle-black powder-coated finish with machined cooling fins
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Built-in internal and external fins for maximum heat dissipation
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Increased oil capacity compared to stock
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Dual neodymium magnetic drain and deep-reach fill plugs
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Large oil level sight glass for quick inspection
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Factory-set calibration plug prevents overfilling
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Direct fit for AAM 11.5–14 bolt rear axles
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Includes all required installation hardware
Vehicle Fitment
Fits GM Diesel & Gas Trucks (2001–2019):
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Chevrolet Silverado 2500 HD / 3500 / 3500 HD
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GMC Sierra 2500 HD / 3500 / 3500 HD
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Diesel: V8 6.6L Duramax
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Gas: V8 8.1L / 6.0L
Designed for vehicles equipped with AAM 11.5–14 bolt rear axles.
Emissions Disclaimer
This product does not require a CARB EO number.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
