Shop parts for GM's Duramax diesel engine, covering every generation from the original 2001-2004 LB7 through the current L5P. Whether you're chasing more power, fixing a worn-out component, or upgrading for towing and off-road use, we carry trusted brands like Industrial Injection, Fluidampr, HP Tuners, and Titan Fuel Tanks. Browse by generation below to find injectors, turbos, fuel system parts, and rebuild components matched to your exact engine code.