Ensure your semi truck is Ready for the Road Ahead™ with improved engine efficiency and performance, with the Dorman Heavy Duty Exhaust Gas Recirculation Valve. By utilizing a sophisticated design, this replacement valve reduces nitrogen oxide levels by recirculating a percentage of an engine's exhaust gases back into the intake manifold. Constructed with top-quality components to minimize the need for cleaning. FleetPride is your First Click in Heavy Duty®.