2014-2021 GMC Sierra 1500 (AAM 9.5/9.76) Pro Series Rear Differential Cover Black w/ Machined Fins & Gear Oil

PRO Guard D2 Synthetic 75W-90 Gear Oil:
The supplied gear oil (four 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:
Calibration plug set to the factory oil level to eliminate overfilling.

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

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