Cometic GM LML/LGH Duramax 4.130in Bore .047in MLX Cylinder Head Gasket Top End Gasket KitCOMETIC StreetPro Kits cater to the budget minded street rodder who is looking to purchase a kit with all necessary gaskets and seals needed for their rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. This Part Fits: Year Make Model Submodel 2011 2016 Chevrolet Express 2500 Base 2011 2016 Chevrolet Express 2500 LS 2011 2016 Chevrolet Express 2500 LT 2011 2016 Chevrolet