2004.5-2005 GM Duramax 6.6L LLY Stock & Modified Stock Turbos

Swapping out the turbocharger on your 2004.5-2005 GM 6.6L Duramax LLY is a common modification many Sierra/Silverado owners make on their rig, so whether you're looking to completely upgrade your engine for improve power and performance, or you simply need a stock replacement, we have your back here at Alligator Performance! Upgrading the turbo will help your engine run more efficiently and effectively especially during any high-performance applications, so pick one up today to set your custom GM 2500/3500 build apart from the rest of the pack! 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.