Dual Neodymium Magnetic Plugs are Used for Maximum Gear Protection. Large Oil Level Sight Glass and Calibration Plug Set to the Factory Oil Level Prevents Overfilling. Includes 3 Quarts PRO Guard D2 Synthetic 75W-90 Oil. Fits Dana M220 Rear Axles. Unfortunately UPS doesn't accept PO box address.Once we see that items are on their way we will send a replacement. PRO Guard D2 Synthetic 75W-90 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. When it comes to engineering for power, performance, protection and value, aFe POWER is the only choice. Please see the "Compatibility" link at the top of the listing. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Transmission & Drivetrain\Differentials, Assemblies & Parts\Additional Differential Parts".store" and is located in this country: US. This item can be shipped to United States.