Fuel System Components

The LB7 fuel system category is one of the most important Duramax sections because injectors are the big repair on these trucks. LB7 owners also shop CP3 pumps, fuel pressure regulators, lines, rails, and related hardware.

LB7 injectors, CP3 pumps, fuel pressure regulators, high-pressure lines, return lines, rails, and install parts all support fuel system work on 2001-2004 GM Duramax trucks. Injector replacement on an LB7 is labor-heavy, so handle related seals and lines while the job is open.