Prepare your semi to be Ready for the Road Ahead™, with the Haldex MTC Desiccant Air Dryer Cartridge Kit for PURest™ Air Dryer that provides clean and dry pneumatic systems to optimize air brake performance. By utilizing a tight-filtering design, this replacement filter is able to remove oil, dirt, dust, and other contaminants from the air lines to defend against ice formation, corrosion, or valve damage. Prepared with sturdy materials to endure demanding operating conditions such as rough vibrations and high temperatures. FleetPride is your First Click in Heavy Duty®.