2020-2021 Chevrolet Silverado Trucks V8-6.6L (AAM 11.5/12.0-14) Pro Series Rear Differential Cover Black w/ Machined Fins & Gear Oil

Part#:
46-71261B
Item Availability : Typically ships in 2-4 business days
$515.43 USD Save: $103.09 (20.00%) $412.34

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PRO Guard D2 Synthetic 75W-90 Gear Oil:
The supplied gear oil (4 quarts) exceeds the performance requirements of API GL-5 recommended for both open and limited slip applications.

Increased Oil Capacity:
This cover has an increased oil capacity over stock for better performance over a longer duration.

Built-in Internal/External Fins:
Built-in internal and external fins transfer heat from the oil to the outside air for maximum cooling.

Magnetic Plugs:
This cover incorporates a magnetic drain and deep reach fill plug to capture loose particles for maximum protection.

Calibration Plug:
A calibration plug is set to the factory oil level to prevent overfilling.

Oil Level Sight Glass:
A pre-installed oil level sight glass allows quick and easy oil inspection.

Fitment Note:
This item fits vehicles equipped with AAM 11.5/12.0 Rear axles.

Emissions Disclaimer:
This product does not require a CARB EO#.

When it comes to engineering for power, performance, protection and value, aFe POWER is the only choice.


  • Instructions
  • Dyno Chart


Vehicle Applications

Year Make Model SubModel Engine Fuel
2020-2021Chevrolet Silverado 2500 HD Duramax V8 6.6L (td) Diesel
2020-2021Chevrolet Silverado 3500 HD Duramax V8 6.6L (td) Diesel
2020-2021Chevrolet Silverado 2500 HD V8 6.6L Gas
2020-2021Chevrolet Silverado 3500 HD V8 6.6L Gas
2020-2021GMC Sierra 2500 HD Duramax V8 6.6L (td) Diesel
2020-2021GMC Sierra 3500 HD Duramax V8 6.6L (td) Diesel
2020-2021GMC Sierra 2500 HD V8 6.6L Gas
2020-2021GMC Sierra 3500 HD V8 6.6L Gas
More Information
Weight21.00 lbs
Parent Product TypePerformance Upgrades
Product TypesDifferentials
BrandAdvanced Flow Engineering
MakeChevrolet
ModelSilverado
Year2020, 2021