Fleece Performance #3 and #6 Injection Line 01-04 6.6L GM Duramax LB7

The original LB7 Duramax injector lines are notorious for corrosion and breaking that can lead to contamination of your injectors. If you are changing your injectors, have a line failure, or are looking to upgrade your stock lines, we’ve got you covered with the Fleece Performance direct replacement LB7 injection lines! An upgrade to the factory lines on your 2001-2004 Duramax LB7, the Fleece Performance lines feature machined 4140 injector swivel nuts and are corrosion resistant. This injector line is a direct replacement and will fit either cylinder hole #3 or #6.

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