2006-2007 GM Duramax 6.6L LBZ Exhaust Manifolds

The factory exhaust manifold on your 2006-2007 GM 6.6L Duramax does it's job for everyday driving conditions, but it's start to fall short during any high-performance applications. In order to achieve the best efficiency out of your turbocharger, invest in one of the premium aftermarket exhaust manifolds we offer for your Sierra/Silverado 2500/3500. An upgraded exhaust manifold works by improving the overall airflow of your exhaust fumes, resulting in either quick boost response of improved top-end performance depending on your intended applications. Pick one up today so you can easily set your custom GM 2500/3500 build apart from the rest of the pack! 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.