Outfit your semi with clean and dry pneumatic systems to optimize air brake performance, with the OTR 1200 Style Air Dryer Cartridge with Expertise Built In™. To guard against corrosion, ice formation, and valve damage, this replacement filament works to remove dirt, dust, oil, and other contaminants from the air lines. Fashioned with durable materials to withstand demanding operating conditions such as high temperatures and rough vibrations. FleetPride is your First Click in Heavy Duty®.