2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Injectors

Enhancing your fuel delivery system with high-performance injectors will significantly improve your 6.6L Duramax's power, reliability, and efficiency. At Alligator Performance, we offer a wide selection of aftermarket injectors specifically designed for your truck. These injectors are perfect for replacing worn factory units, helping your truck regain its performance and dependability. Boost your truck’s fuel delivery capacity and reliability with our premium injectors for the GM 6.6L Duramax! Pair your new injectors with our selection of Fuel Upgrades.  GM Duramax Fitments: 2004, 2005 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.