Gaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide. MLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring seal for more power. 4-stroke head gaskets are made to perform on todays highest-output 4-stroke naturally aspirated and boosted machines, utilizing a multi-layered steel design with the outer layers being embossed and coated with a Viton rubber coating; these head gaskets are designed to meet the demands of today’s high-horsepower, high-cylinder-pressure engines. Complete kit contains every gasket, sealing washer, O-ring and oil seal needed to completely seal one engine. Made in the U.S.A..