Fuel System Components
Keep your 2001–2004.5 GM 6.6L Duramax LB7 running strong with high-quality fuel system components designed to restore performance, reliability, and fuel efficiency. The LB7 was the first generation of the Duramax diesel engine and is known for its power—but also for specific fuel system issues like injector failure, CP3 pump wear, and pressure regulation problems.
Whether you're maintaining your daily driver or rebuilding a high-mileage workhorse, our collection of LB7 fuel system parts includes everything you need to keep your diesel performing at its best. From OEM injectors and CP3 injection pumps to fuel pressure sensors, control actuators (FCA/MPROP), and rail pressure relief valves, we stock only trusted brands like Bosch, the original equipment manufacturer for many Duramax fuel components.
