Upgrading the OEM turbo gaskets on your 2006-2007 GM 6.6L Duramax is a smart choice for many Sierra and Silverado owners to ensure reliable turbocharger performance. Our turbo gaskets deliver a leak-free seal, even under high boost pressures and extreme heat, preventing exhaust leaks and maintaining turbo efficiency. At Alligator Performance, we offer a selection of aftermarket turbo gaskets designed to help your truck withstand high temperatures and pressures during demanding applications. Take your trucks turbo charger to the next level with our full selection ofTurbo Upgrades! GM Duramax Fitments: 2006, 2007 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.