Prevent water vapors and contaminants from leading to brake malfunctions, with the WABCO SS1200 Plus Turbo Cut-Off Valve Air Dryer that ensures you're Ready for the Road Ahead®. This air dryer seamlessly removes moisture and vapors from compressed air to prevent contaminants from entering your supply and wet tanks. In addition, each air dryer also features a turbo cut-off valve, integrated governor valve, and desiccant and oil separator cartridge for fast and easy replacement. To confirm your air dryer needs replacement, check for symptoms such as blocked purge valves, leaking air, or poor-performing condensers that are unable to receive stored pressure. FleetPride is your First Click in Heavy Duty®.