aFe 46-71120B Pro Series Rear Differential Cover for 14-23 GM 1500 (AAM 9.5/9.76

Vehicle Fitment

• 2014-2023 Chevrolet Silverado 1500 (AAM 9.5/9.76 12-bolt rear axle)
• 2014-2023 GMC Sierra 1500 (AAM 9.5/9.76 12-bolt rear axle)
• 2015-2023 Chevrolet Tahoe/Suburban (AAM 9.5/9.76 rear axle)
• 2015-2023 GMC Yukon/Yukon XL (AAM 9.5/9.76 rear axle)
• 2015-2023 Cadillac Escalade (AAM 9.5/9.76 rear axle)

Features

• Durable cast-aluminum construction with wrinkle-black powder coat
• Integrated external and internal fins for enhanced cooling
• Increased fluid capacity - holds ~1 qt more than stock
• Pre-installed oil level sight glass with calibration plug to prevent overfill
• Neodymium magnetic drain plug to capture metal debris
• Deep-reach 3/4" magnetic fill plug for easy servicing
• Factory-pattern bolt holes - direct bolt-on with included hardware
• No CARB EO required - not emissions-related

Specifications

• Part Number: 46-71120B
• Material: Cast aluminum
• Finish: Wrinkle-black powder coat, machined fins
• Axle Compatibility: AAM 9.5/9.76 rear 12-bolt axles
• Mounting: OEM 12-bolt pattern, includes hardware
• Capacity Increase: +~1 qt vs stock cover
• Drain Plug: Magnetic; Fill Plug: 3/4" magnetic, deep reach
• Sight Glass: Factory-set calibration included

Included Components

• 1x aFe Pro Series Rear Differential Cover (46-71120B)
• 1x Oil level sight glass (factory-calibration plug)
• 1x Magnetic drain plug
• 1x 3/4" deep-reach magnetic fill plug
• Hardware kit (12 bolts, washers)
• Installation instructions

Product Description

The aFe 46-71120B Pro Series Rear Differential Cover is engineered for 2014-2023 GM 1500 trucks and SUVs equipped with AAM 9.5 or 9.76 rear 12-bolt axles, including Silverado, Sierra, Tahoe/Suburban, Yukon/Yukon XL, and Escalade. Crafted from rugged cast aluminum with internal and external cooling fins, this cover improves gear oil cooling performance.  :contentReference[oaicite:1]{index=1}

It increases fluid capacity by approximately one quart for better thermal stability, and features a pre-installed oil sight glass with calibration plug to prevent overfilling. Dual magnetic plugs collect metal debris for enhanced gear protection. Without any need for drilling or modifications, it installs easily with factory-pattern hardware.  :contentReference[oaicite:2]{index=2}

Finished in wrinkle-black powder coat with machined fins, this cover enhances both durability and style - doubling as a performance upgrade and visual enhancement under your vehicle. Also, it carries a limited lifetime warranty and is not subject to CARB regulations.  :contentReference[oaicite:3]{index=3}