Renovate your semi with components with Expertise Built In , with the OTR AD-9 Style Oil Coalescing Air Dryer Cartridge that offers clean and dry pneumatic systems to optimize air brake performance. With a tight-filtering design, this replacement filament works to remove dirt, dust, oil, and other contaminants from the air lines to prevent ice formation, corrosion, and potential valve damage. Manufactured with rugged materials to withstand demanding operating conditions such as high temperatures and rough vibrations. FleetPride is your First Click in Heavy Duty .