2007.5-2010 GM 2500HD/3500HD 6.6L LMM Duramax Injection Pumps

The Stock CP3 fuel injection pump on your 2007.5-2010 GM 6.6L Duramax LML works decently for basic everyday applications, but certainly doesn't flow efficiently for heavy-duty applications you have in mind.  Our upgraded injection pumps deliver enhanced performance for towing, off-roading, or hauling. An upgraded injection pump improves fuel flow and pressure, leading to better throttle response, increased power, and more efficient fuel combustion. These pumps are crucial for maintaining engine reliability and overall performance, particularly in demanding conditions. Enhance your Sierra/Silverado's fuel system performance with our premium replacement or upgraded CP3 pumps available at Alligator Performance! Check out our full selection of Fuel Upgrades! GM Duramax Fitments: 2007, 2009, 2010 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.