Shop with Blessed Performance for the Exergy Performance Fuel Injector Line Set for your 2001-2004 GM 6.6L LB7 Duramax diesel. Replacing the fuel injector lines is highly recommended when changing the LB7 fuel injectors. The original lines can have rust and corrosion build up near the ends of the lines. Or worse, corrosion build up between the nut and line that cannot be seen that can break loose during assembly and fall into the injector inlet. These sources of contamination will cause problems to your new injectors. They can also damage the sealing surfaces which will cause a high pressure fuel leak into the engine oil.
Note: The line set is the same for each bank. This set comes with 4 high pressure injector lines to complete 1 bank of injectors. For both banks, please order 2 injector line sets.