Fuel System
For 2011-2016 Chevy/GMC With 6.6L Duramax LML Diesel Engine
The 2011-2016 GM 6.6 LML Duramax engine featured new piezo actuated fuel injectors, capable of handling 30,000+ psi (up from the 26,000psi in the LMM). For 2011 GM also switched to the Bosch CP4 Pump (CP4.2) from the CP3 that was used in previous Duramax applications. This common rail injection system consisted of a low-pressure fuel system, and a high-pressure fuel system. The low-pressure side simply filters and transfers fuel from the tank to the injection pump, effectively keeping the injection pump lubricated and primed with fuel. The high-pressure side delivers fuel to the rails and injectors.
The ECM regulates the pump rail pressure by modulating opening/closing valves, regulators and actuators located on the pump and on the rail. Any excess fuel volume returns to the fuel tank. Regardless of the application or make, rest assured that all common rail injection pumps have extremely precise internal tolerances and can be susceptible to damage if not provided with ample, well filtered, diesel fuel containing few contaminants. With each new iteration, the 6.6L Duramax, and its updated injection system has given Duramax enthusiasts better performance than previous fuel systems, and the control systems within the ECM can now deliver significant power while metering the fuel more precisely than ever.
Whether you are looking to perform routine maintenance with a GM fuel filter, repair your fuel system with high quality XDP, Industrial Injection, or Alliant parts, or improve your fuel system with an upgraded Lift Pump, or step-up performance and reliability with a CP4 to CP3 Conversion kit, or Fuel Contamination Kit, XDP has your 6.6L Duramax Fuel System covered. In addition, XDP offers stock replacement parts such as Bosch CP4 Pumps, Fuel Injectors, Fuel Lines, as well as fuel system gaskets and seals.
XDP carries Duramax LML parts from all the leading manufacturers like Bosch, Merchant Automotive, PurePower, GM, FASS, AirDog, PurePower, Dynomite Diesel, Bostech, DTech, and more.
The ECM regulates the pump rail pressure by modulating opening/closing valves, regulators and actuators located on the pump and on the rail. Any excess fuel volume returns to the fuel tank. Regardless of the application or make, rest assured that all common rail injection pumps have extremely precise internal tolerances and can be susceptible to damage if not provided with ample, well filtered, diesel fuel containing few contaminants. With each new iteration, the 6.6L Duramax, and its updated injection system has given Duramax enthusiasts better performance than previous fuel systems, and the control systems within the ECM can now deliver significant power while metering the fuel more precisely than ever.
Whether you are looking to perform routine maintenance with a GM fuel filter, repair your fuel system with high quality XDP, Industrial Injection, or Alliant parts, or improve your fuel system with an upgraded Lift Pump, or step-up performance and reliability with a CP4 to CP3 Conversion kit, or Fuel Contamination Kit, XDP has your 6.6L Duramax Fuel System covered. In addition, XDP offers stock replacement parts such as Bosch CP4 Pumps, Fuel Injectors, Fuel Lines, as well as fuel system gaskets and seals.
XDP carries Duramax LML parts from all the leading manufacturers like Bosch, Merchant Automotive, PurePower, GM, FASS, AirDog, PurePower, Dynomite Diesel, Bostech, DTech, and more.