This is our 6.7 cummins turbo gasket install kit very high quality. Fitment is for 2007.5-current 6.7 cummins. These gaskets are for a factory turbo and or a modified drop in factory turbo. Comes with t4i manifold to turbo gasket, oil drain gaskets, along with 4 new studs for turbo and manifold with stainless flange nuts.