2001-2004 GM Duramax 6.6L LB7 Stock & Modified Stock Turbos

It's an unfortunate fact that the stock turbocharger on your 2001-2004 GM 6.6L Duramax LB7 isn't going to last forever, so when it eventually starts causing performance issues, it's best to swap it out with a premium replacement. Here at Alligator Performance, we carry a wide variety of both direct stock replacements for a quick and easy upgrade, and modified turbochargers take your Sierra/Silverado to the next level. Better yet, we only work with the top manufacturers in the industry so you can be sure your custom GM 2500/3500 build will be taken care of. GM Duramax Fitments: 2001, 2002, 2003, 2004 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.