Finish off a fuel injector repair in your 2020-2022 Chevy/GMC 6.6L L5P Duramax with new or remanufactured Fuel Injector Lines. It's always a good idea to replace fuel injector lines when replacing injectors especially after damaged components from fuel contamination. In cases with injector failure due to fuel contamination, it is also recommended that you replace your fuel injector lines and other components to not contaminate new components. 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. Shop XDP today and get new Fuel Injector Lines for your vehicle from industry brands like DTech, Fleece, Dorman, PurePower, Industrial Injection, and more!