Differential Cover; Pro Series; Dana M220; 12 Bolt; Without Girdle; Magnetic Drain Plug; With Fill Plug; Powder Coated; Black; Die Cast Aluminum; With 3 Quarts of Gear Oil 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. Axle Model: Dana M220 Cover Bolts: 12 Finish: Powder Coated Color: Black Material: Aluminum Type: Slotted Carrier Main Cap Support/Girdle: No Includes Drain Plug: Yes Includes Filler Plug: Yes Includes Gaskets: No Includes Bolts/Studs: No