Whether used for daily driving, off-roading, or for towing, this Gladiator Street Series cover’s increased fluid capacity and optimized design make for cooler and healthier long-term differential operation. Constructed out of durable cast aluminum Neodymium magnetic drain plug for gear protection Calibration plug set to the factory oil level to prevent overfilling Includes sway bar spacers Fits Dana M220 rear axle 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 plug to capture loose particles for maximum protection A calibration plug is set to the factory oil level to prevent overfilling Optional Accessories Available: Our optional deep reach magnetic fill plug and oil level sight glass are great additions to combine with this cover.