Outfit your semi with clean and dry pneumatic systems to optimize air brake performance, with the OTR IS Style Oil Coalescing Air Dryer Cartridge with Expertise Built In™. 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®.