Product Details: Get Ready for the Road Ahead® with clean and dry compressed air that enhances brake performance, thanks to the Bendix Remanufactured AD-9® Air Dryer. This air dryer seamlessly removes moisture and vapors from compressed air to prevent contaminants from entering your supply and wet tanks. As a result, your vehicle's air brakes can be more efficiently actuated - while incurring less wear and tear. Symptoms of an air dryer needing replacement include leaking air, blocked purge valves, or poor-performing condensers unable to receive built pressure. FleetPride is your First Click in Heavy Duty®.