Ensure your semi truck is Ready for the Road Ahead™ with reduced nitrogen oxide emissions, with the Dorman Heavy Duty Exhaust Gas Recirculation Cooler Kit. Thanks to its specialized design that cools the exhaust gas, this replacement device is able to decrease the overall combustion temperature and volume of NOx produced. Crafted with high-quality materials to tolerate extreme temperatures. FleetPride is your First Click in Heavy Duty®.