Complete the fuel injector replacement in your 2004.5-2007 Dodge 5.9L Cummins with a new set of Fuel Injector Lines. On some engines the fuel injector lines are considered a "one-time-use" component and need to be replaced when new fuel injectors are installed. When repairing injectors due to fuel contamination, it is also recommended that you replace fuel injector lines to avoid contaminating your new fuel injectors. It's always a good idea to replace fuel injector lines when replacing injectors especially after damaged components from fuel contamination. Shop XDP today and get new Fuel Injector Lines for your vehicle from industry brands like DTech, Cummins, Fleece, Dorman, PurePower, GM, Industrial Injection, and more!