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

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Whether you’re restoring your GM truck or aiming to boost its power, we offer a wide range of options to maximize your investment. Featuring reputable brands, our extensive selection of reliable and powerful crate engines and rebuild kits will elevate your truck’s performance and dependability to the next level. Pair your new crate engine with our selection of Complete transmissions! 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. 

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