aFe Axle Differential Cover Dana M220 Aluminum Black Rear With 75W-90 Gear Oil Bronco 2021-2025
Highlights
- Cast Aluminum Construction
- Wrinkle-Black Powder-Coated
- Large Oil Level Sight Glass
- Includes 3 Qts. of 75W-90 Oil
aFe Black Aluminum Rear Dana M220 Axle Differential Cover with 75W-90 Gear Oil for 2021-2024 Ford Broncos.
Designed for 2021-2024 Ford Broncos, this aFe Rear Dana M220 Axle Differential Cover (46-71290B) allows for incredible differential protection while also remaining easy to maintain! It conveniently includes three (3) quarts of PRO Guard HD synthetic 75W-90 oil for consistently well-oiled axle operation.
Features and Benefits:
- Fits Bronco Dana M220 rear axles
- Durable cast aluminum construction
- Wrinkle-black powder-coating with machined fins
- Dual neodymium magnetic plugs protect gears
- Large oil-level sight glass with calibration plug
- Plug is set to factory level to eliminate overfill
- Includes 3-qts. of PRO Guard HD synthetic 75W-90 oil
This Differential Cover is constructed from durable cast aluminum with a wrinkle-black powder-coated finish. Its construction includes machined fins and reinforced ribs for increased strength. It is made with dual neodymium magnetic plugs to protect its gears while its large oil-level sight glass allows you to monitor the oil level. It also has a calibration plug that is set to the factory level, easily eliminating overfilling. The included oil allows this Differential Cover (46-71290B) to at least meet API GL-5 performance requirements that are recommended for limited and open slip applications. It offers increased capacity over your stock differential cover, a deep-reach fill plug that catches loose particles, and internal and external fins that are built-in to transfer heat away from the oil.
California Residents: Proposition 65 Warning
Installation Difficulty

Novice skill is required for this installation.