Fleece 01-04 GM 2500/3500 Duramax LB7 Fuel Injection Line (2 & 7) Dual Control Large Diameter Intake TubeThe Large

Large Diameter Intake TubeThe Large Diameter Intake Tube was designed to minimize restriction and feed more air to the filter

Garrett Model 953223-5001S

and fueling upgrades

E2000 Plus

Rough Country's vehicle-specific kits are backed by Rough Country's Satisfaction Guarantee

Fleece 01-04 GM 2500/3500 Duramax LB7 Fuel Injection Line (2 & 7) Dual Control Large Diameter Intake TubeThe LargeFleece Performance Model FPE FL LB7 27 Original LB7 Injection lines will corrode and break and are a leading cause of contamination when changing the 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 our direct replacement LB7 injection lines! An upgrade to the factory lines on your 2001 2004 Duramax LB7, our Fleece Performance lines feature machined 4140 injector