Produced in the U.S.A. with the latest materials and technology to Vertex specifications, Vertex gaskets ensure long-lasting performance and leak prevention for your rebuild needs. Vertexs replacement gaskets and seals are available as top end kits, complete engine kits, or oil seal kits.Top End Gasket Kits:- Includes head, base, and exhaust gaskets, valve seals, o-rings, and other gaskets for a top end rebuild.Complete Gasket Sets:- Contains all the gaskets, o-rings, and valve seals necessary to rebuild the entire engine and transmission (*transmission seals not included).