If you're dealing with lifter tick or want to delete the AFM/DOD system on your GM truck, this complete kit has everything you need. It includes 16 NON-AFM hydraulic roller lifters, a multi-layer steel head gasket, valve cover gasket, intake and exhaust manifold gaskets, valve stem seals, front cam seal, O-rings, and all necessary head bolts. Designed specifically for 2007–2016 Chevy Silverado 2500/3500 HD 6.0L, GMC Sierra 6.0L, Express/Savana vans, Suburban, Yukon XL, and even some 6.2L models. This kit lets you ditch the problematic Active Fuel Management system and restore reliable performance. All parts are made to OEM specs for a perfect fit and lasting durability. Whether you're a seasoned mechanic or a serious DIYer, this kit saves you time and money by bundling all the essentials. Get your truck running smooth and strong again!