Product Details: The Meritor Air Dryer Purge Valve Kit is designed to ensure a clean air supply and help lengthen the service life of the air brake. This kit includes 100% brand new and certified genuine replacement components for Meritor air dryers. The purge valve helps reduce the contaminant buildup in the air brake reservoir, which can lead to premature failure of the air brake system. This kit is easy to install and comes with detailed instructions for a hassle-free installation. With this air dryer purge valve kit, you can rest assured that your air brake system is running at peak performance. FleetPride is your First Click in Heavy Duty®.