Multi layer steel head gasket for X1/9 1500cc engines with 14 head bolts. These gaskets are designed to hold up under extreme conditions; turbo charging, high compression, overheating, etc. The gasket is viton-coated and can be reused if not coated with sealer or otherwise damaged. MLS gaskets act like a spring to retain pressure as the head/block expand and contract during heat cycles. This is the ultimate gasket for your X!