The Fuel Injector Delivery Connection Tubes are high-quality replacement parts for 2003 - 2011 5.9L and 6.7L Dodge Cummins engines. These tubes are responsible for carrying fuel from the fuel rail to the injectors, and they are critical for the proper operation of the engine. They are made of durable materials and are designed to withstand the high pressures and temperatures of the engine. These connection tubes are easy to install and are a direct replacement for the factory parts. With a one year unlimited mileage warranty, you can trust that it's built to last. Replace your worn or damaged connection tubes with these high-quality replacements and keep your engine running smoothly.