The WABCO Check Valve Kit is the perfect solution for rebuilding your air dryer. This kit is made with durable materials that can withstand harsh operating conditions, ensuring a long-lasting and reliable performance. It features the highest drying performance in the industry, allowing you to get the most out of your air dryer. The kit includes everything you need to rebuild the check valve, including a new check valve, gasket, and O-ring. With this kit, you can easily restore your air dryer to its original performance. FleetPride is your First Click in Heavy Duty®.