Product Details: Outfit your semi to be Ready for the Road Ahead™ with clean and dry pneumatic systems to optimize air brake performance, with the Bendix AD-9® Air Dryer Desiccant Cartridge Replacement Kit. Thanks to its tight-filtering design, this replacement filament works to remove dust, oil, dirt, and other contaminants from the air lines to guard against valve damage, ice formation, and corrosion. Crafted with durable materials to withstand demanding operating conditions such as rough vibrations and high temperatures. FleetPride is your First Click in Heavy Duty®.