After upgrading your truck with a new torque converter, the stock flex plate or flywheel on your 2001-2004 GM 2500HD/3500HD’s transmission may not be up to the task for your heavy-duty performance needs. Our selection of aftermarket flex plates is the perfect solution to address transmission issues and upgrade performance. Precision-engineered and constructed from high-durability materials, these flex plates are designed to improve gear shifts and enhance your transmission’s overall performance. Get your new flex plate for your GM 2500HD/3500HD from Alligator Performance today! Check out our great selection of Rebuild Kits & Internal Parts to maximize your transmission's reliability and performance!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.