Description
aFe POWER Front & Rear Diff GUARD Package w/ Oil – Black w/ Machined Fins
Protect your drivetrain with confidence using the aFe POWER Front & Rear Diff GUARD Package, engineered for 2020–2025 Chevrolet Silverado and GMC Sierra 2500HD/3500HD Duramax 4x4 trucks. This complete differential protection and service kit delivers increased strength, improved cooling, and premium lubrication for heavy-duty towing, hauling, and off-road use.
Complete Ready-to-Install Differential Service Kit
This all-in-one package includes front and rear Pro Series differential covers, all required mounting hardware, and 6 quarts of PROGUARD Synthetic 75W-90 gear oil, providing everything needed for a full front and rear axle service in one convenient solution.
Heavy-Duty Cast Aluminum Construction
Both differential covers are manufactured from durable cast aluminum and feature reinforced ribbing for superior strength and rigidity. This robust design helps protect internal components from flex, impact, and thermal stress under extreme driving conditions.
Advanced Cooling & Increased Oil Capacity
Integrated internal and external cooling fins increase surface area to efficiently dissipate heat, helping maintain optimal gear oil temperatures. The Pro Series covers also offer increased oil capacity over stock, improving lubrication and thermal stability during extended high-load operation.
Precision Fluid Control & Easy Maintenance
Each cover includes a large oil level sight glass for quick visual inspection and a factory-calibrated oil level plug to eliminate guesswork and prevent overfilling. Neodymium magnetic drain and deep-reach fill plugs capture metallic debris and contaminants, delivering maximum gear protection and long-term reliability.
Premium Black Powder-Coated Finish
Finished in a black powder coat with precision-machined fins, these differential covers provide excellent corrosion resistance while delivering a bold, performance-inspired appearance.
PROGUARD Synthetic 75W-90 Gear Oil Included
The included PROGUARD Synthetic 75W-90 gear oil exceeds API GL-5 specifications and is fully compatible with both open and limited-slip differentials, ensuring superior protection for front and rear axles.
Kit Includes
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Front AAM 9.25" / 12-Bolt IFS Pro Series Differential Cover
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Rear AAM 11.5" / 12.0"–14-Bolt Pro Series Differential Cover
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6 quarts PROGUARD Synthetic 75W-90 Gear Oil
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Magnetic drain and fill plugs
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Oil level sight glasses and calibration plugs
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All required mounting hardware
Fitment
Designed for 4x4 trucks only equipped with:
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Front: AAM 9.25" / 12-Bolt IFS axle
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Rear: AAM 11.5" or 12.0" / 14-Bolt axle
Vehicle Applications:
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2020–2025 Chevrolet Silverado 2500 HD – 6.6L Duramax
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2020–2025 Chevrolet Silverado 3500 HD – 6.6L Duramax
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2020–2025 GMC Sierra 2500 HD – 6.6L Duramax
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2020–2025 GMC Sierra 3500 HD – 6.6L Duramax
Please verify axle configuration prior to ordering.
Emissions Compliance
This product does not require a CARB EO#.
When complete drivetrain protection, cooling efficiency, and convenience matter most, the aFe POWER Pro Series Diff GUARD Package delivers uncompromising strength, performance, and value.
