Cometic GM L83 Gen-5 Small Block V8 Top End Gasket Kit 3.875in Bore .058in MLX Cylinder Head GasketCOMETIC 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 2016 2018 Chevrolet Silverado 1500 Custom 2014 2018 Chevrolet Silverado 1500 High Country 2015 2018 Chevrolet Silverado 1500 LS 2014