Roger Clark Motorsport EJ22 Multi Layer Head Gasket 0.78mm SINGLEEngineered to perform under the most extreme of conditions our cylinder head gaskets are rated for use up to and over 600BHP. Unlike most conventional cylinder head gaskets, our gaskets use what is most commonly known as a folded stopper level. This revolutionary design dramatically reduces the chances of any pressure leakage from the cylinders. An increased thickness in the gasket is introduced around vital sealing areas and the design of this extra