Cometic Gasket C9940 Motor Only Gasket Kit - 4in Bore Complete S&S Motor Kit with S&S Rocker Boxes

Every gasket in these kits uses the best materials possible for its intended application. Multi-Layer Steel (MLS) head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals. Aluminum Foam Material (AFM) race-style exhaust gaskets.