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

While the factory turbocharger in your 2004.5-2005 GM 2500HD/3500HD is sufficient for stock applications, there's significant potential for improvement to unleash its full power. We offer a variety of upgrades, from turbo drain kits to complete high-performance turbochargers, to help maximize your engine's performance. Whether you decide to enhance your existing setup or go for a full turbo replacement, we have the perfect solution to meet your needs. Elevate your 6.6L Duramax's power with these turbo upgrades! Pair your new Turbo Upgrades with our selection of Engine 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.