The JE Pro Seal head gasket for Mitsubishi 4G63 engines used in Evolution IV–VIII (Evo 4–8) is specified with an 85.3mm bore and 0.039-inch thickness (ref C4157-040). It serves as the replacement sealing gasket between head and block to restore combustion chamber and cooling passage sealing during rebuilds or head work on compatible 4G63 Evo IV–VIII applications.
JE Pro Seal Mitsubishi 4G63 EVO 4-8 85.3mm 0.039in Head Gasket (ref C4157-040)