2001-2004 GM Duramax 6.6L LB7 Gaskets

If you're looking to re-seal the cylinder head and upper engine in your 2001-2004 GM 6.6L Duramax LB7, we have your back here at Alligator Performance. We only work with trusted and reliable manufacturers so you can be confident you'll be delivering the best upgrades for your Sierra/Silverado 2500/3500 without compromise. Each aftermarket head gasket set we carry was built to either meet or exceed OEM specifications and standards to ensure a perfect fit and fucntion on your rig. Better yet, these gaskets install directly in place of your factory components to take away any stress associated with modifying your engine. 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.