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Cometic's .030" MLS cylinder head gasket for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 features a 4.310" bore and multi-layer stainless construction with Viton-coated outer layers. Built to seal high-output engines without sealants, it resists corrosion and shear between dissimilar metals. The center shim layer can be varied for thickness needs and the gasket is suitable for aftermarket heads requiring undersized water ports for customization.
Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .030in MLS Cylinder Head Gasket - 4.310in Bore
