aFe POWER Pro Series Rear Differential Cover with Machined Fins, Black, Part Number 46-71260B

This cover has an increased oil capacity over stock for better performance over a longer duration. Built-in internal and external fins transfer heat from the oil to the outside air for maximum cooling. This cover incorporates a magnetic drain and deep reach fill plug to capture loose particles for maximum protection. A calibration plug is set to the factory oil level to prevent overfilling. A pre-installed oil level sight glass allows quick and easy oil inspection. This item fits vehicles equipped with AAM 11.5/12.0 Rear axles. aFe POWER Pro Series Rear Differential Cover Black w/ Machined Fins GM Trucks 20-23 V8-6.6L (AAM 11.5/12.0-14)

• Large Oil Level Sight Glass and Calibration Plug Set to the Factory Oil Level Prevents Overfilling
• Dual Neodymium Magnetic Plugs are Used for Maximum Gear Protection
• Constructed out of Durable Cast Aluminum
• Black Powder Coat with Machined Fins
• Fits AAM 11.5/12.0 Rear Axles

Upgrade the rear axle of your compatible GM truck with the aFe POWER Pro Series Rear Differential Cover. Designed for AAM 11.5/12.0 rear axles, this heavy-duty cover increases oil capacity over the factory cover to support improved lubrication and performance during extended driving, towing, and demanding workloads. Its durable cast aluminum construction provides strength and effective heat dissipation, while the black powder-coated finish with machined fins delivers a clean, functional appearance.

Integrated internal and external cooling fins help transfer heat from the differential oil to the surrounding air. A large, pre-installed oil level sight glass makes fluid inspections quick and convenient without removing the cover, while the calibration plug is set to the factory oil level to help prevent overfilling. Dual neodymium magnetic plugs capture metallic particles and loose debris in the gear oil, supporting enhanced gear protection. The deep-reach fill plug simplifies servicing and helps maintain proper fluid levels.

The aFe POWER Pro Series Rear Differential Cover, part number 46-71260B, fits select 2020-2023 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, and GMC Sierra 2500 HD trucks equipped with an AAM 11.5/12.0 rear axle. Verify the vehicle application and axle configuration before installation. The package includes the rear differential cover with machined fins, pre-installed sight glass, calibration plug, and magnetic plugs. Professional installation is recommended, and all installation procedures should follow the vehicle and component manufacturer’s service requirements.

Key Product Specifications and Technical Data

• Brand: aFe POWER
• Product Series: Pro Series
• Part Number: 46-71260B
• Application: Rear differential axle cover
• Compatible Axle: AAM 11.5/12.0 rear axle
• Material: Cast aluminum
• Finish: Black powder coat with machined fins
• Fluid Service Features: Sight glass, calibration plug, deep-reach fill plug, and dual neodymium magnetic plugs

What's Included

• aFe POWER Pro Series rear differential cover
• Pre-installed oil level sight glass
• Calibration plug
• Dual neodymium magnetic plugs

Features:

• Increased Oil Capacity: Provides additional gear oil volume over the stock cover to support lubrication and performance during extended operation.
• Integrated Cooling Fins: Internal and external fins help transfer heat from the differential oil to the outside air for improved thermal control.
• Magnetic Gear Protection: Dual neodymium magnetic plugs capture metallic particles and loose debris to help protect differential components.
• Easy Fluid Monitoring: A pre-installed sight glass and factory-level calibration plug simplify oil inspection and help prevent overfilling.

Fitments:
2020 Chevrolet Silverado 2500 HD Custom
2020 Chevrolet Silverado 2500 HD High Country
2020 Chevrolet Silverado 2500 HD LT
2020 Chevrolet Silverado 2500 HD LTZ
2020 Chevrolet Silverado 2500 HD WT
2020 Chevrolet Silverado 3500 HD High Country
2020 Chevrolet Silverado 3500 HD LT
2020 Chevrolet Silverado 3500 HD LTZ
2020 Chevrolet Silverado 3500 HD WT
2020 GMC Sierra 2500 HD AT4
2020 GMC Sierra 2500 HD Base
2020 GMC Sierra 2500 HD Denali
2020 GMC Sierra 2500 HD SLE
2020 GMC Sierra 2500 HD SLT
2020 GMC Sierra 3500 HD AT4
2020 GMC Sierra 3500 HD Base
2020 GMC Sierra 3500 HD Denali
2020 GMC Sierra 3500 HD SLE
2020 GMC Sierra 3500 HD SLT
2021 Chevrolet Silverado 2500 HD Custom
2021 Chevrolet Silverado 2500 HD High Country
2021 Chevrolet Silverado 2500 HD LT
2021 Chevrolet Silverado 2500 HD LTZ
2021 Chevrolet Silverado 2500 HD WT
2021 Chevrolet Silverado 3500 HD High Country
2021 Chevrolet Silverado 3500 HD LT
2021 Chevrolet Silverado 3500 HD LTZ
2021 Chevrolet Silverado 3500 HD WT
2021 GMC Sierra 2500 HD AT4
2021 GMC Sierra 2500 HD Base
2021 GMC Sierra 2500 HD Denali
2021 GMC Sierra 2500 HD SLE
2021 GMC Sierra 2500 HD SLT
2021 GMC Sierra 3500 HD AT4
2021 GMC Sierra 3500 HD Base
2021 GMC Sierra 3500 HD Denali
2021 GMC Sierra 3500 HD SLE
2021 GMC Sierra 3500 HD SLT
2022 Chevrolet Silverado 2500 HD Custom
2022 Chevrolet Silverado 2500 HD High Country
2022 Chevrolet Silverado 2500 HD LT
2022 Chevrolet Silverado 2500 HD LTZ
2022 Chevrolet Silverado 2500 HD WT
2022 Chevrolet Silverado 3500 HD High Country
2022 Chevrolet Silverado 3500 HD LT
2022 Chevrolet Silverado 3500 HD LTZ
2022 Chevrolet Silverado 3500 HD WT
2022 GMC Sierra 2500 HD AT4
2022 GMC Sierra 2500 HD Base
2022 GMC Sierra 2500 HD Denali
2022 GMC Sierra 2500 HD SLE
2022 GMC Sierra 2500 HD SLT
2022 GMC Sierra 3500 HD AT4
2022 GMC Sierra 3500 HD Base
2022 GMC Sierra 3500 HD Denali
2022 GMC Sierra 3500 HD SLE
2022 GMC Sierra 3500 HD SLT
2023 Chevrolet Silverado 2500 HD Custom
2023 Chevrolet Silverado 2500 HD High Country
2023 Chevrolet Silverado 2500 HD LT
2023 Chevrolet Silverado 2500 HD LTZ
2023 Chevrolet Silverado 2500 HD WT
2023 Chevrolet Silverado 3500 HD High Country
2023 Chevrolet Silverado 3500 HD LT
2023 Chevrolet Silverado 3500 HD LTZ
2023 Chevrolet Silverado 3500 HD WT
2023 GMC Sierra 2500 HD AT4
2023 GMC Sierra 2500 HD Denali
2023 GMC Sierra 2500 HD Pro
2023 GMC Sierra 2500 HD SLE
2023 GMC Sierra 2500 HD SLT
2023 GMC Sierra 3500 HD AT4
2023 GMC Sierra 3500 HD Denali
2023 GMC Sierra 3500 HD Pro
2023 GMC Sierra 3500 HD SLE
2023 GMC Sierra 3500 HD SLT

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1