Afe Power 46-71291B Street Series Differential Cover, Rear, Black Finish, With Gear Oil, For 2021 Ford Bronco (Dana M220)

The Supplied Gear Oil (3 Quarts) Exceeds The Performance Requirements Of Api Gl-5 Recommended For Both Open And Limited Slip Applications. 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.