When you unfortunately must replace a head gasket in your 12 Valve 5.9L Cummins, sourcing all of the gaskets and seals needed can be a real headache. Make it easy for yourself with the Cummins Standard Thickness Upper Engine Gasket Kit. This kit comes with everything needed to perform a head gasket job including head gasket, exhaust manifold gaskets, intake manifold gaskets, valve seals, valve cover gaskets, and much more. This kit is designed for heads that did not need to be resurfaced as the head gasket included is a standard thickness. Replace your head gasket like the pros with this kit from Cummins.