This Banks Ram - Air Differential Cover is a revolutionary product in the cover industry. It fits Ford Powerstroke vehicles with Sterling Axle (12 - bolt w/ 10.25/10.5 ring gear) from 1985 to 2019. Banks tested all flat - back covers on the market and designed this new Ram Air Cover. It cools 5 times better than flat - backs and 118% better than competitors, significantly improving fuel efficiency and extending oil life. The cover features a die - cast A - 380 aircraft aluminum housing, chrome - plated hardware and magnetic plug, and a stainless sight - glass with a contrast screen. It's also designed to break away if snagged. The Banks Power design allows fluid to flow through gears with little resistance, keeping oil cool. Most aftermarket covers with fins don't work well as there's no proper airflow. In contrast, this cover's patented Ram - Air system directs cool high - velocity air through radiator fins. It also has user - friendly features like magnetic fill and drain plugs for easy oil changes.

Using the Banks Ram - Air Differential Cover is straightforward. First, make sure your vehicle is a Ford Powerstroke with a Sterling Axle from 1985 - 2019. Then, install the cover as per the included instructions. When filling the oil, use the magnetic 3/4' fill plug with a 3/8' square drive, no need for a hex wrench. The 20 - degree angle makes filling easy. For oil changes, use the recessed magnetic 3/8' drain plug, also with a 3/8' square drive. As for maintenance, regularly check the stainless sight - glass with the contrast screen to monitor the oil level. If you ever snag the cover on something, it's designed to break away, but you should then inspect it for damage and replace it if necessary. Keep the cover clean to ensure the Ram - Air system works effectively. Avoid using harsh chemicals on the cover, as it's made of die - cast A - 380 aircraft aluminum which could be damaged.