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Cometic MLS head gasket for Chevrolet Mark IV big-block V8 features a 4.630-inch bore and a compressed operating thickness of 0.075 inches. Constructed from multiple embossed stainless steel layers with Viton-coated outer faces, the gasket resists corrosion and handles shearing between dissimilar materials. The uncoated stainless center shim layer allows varied thickness options; MLS construction requires no sealants for heavy-duty sealing.
Cometic GM Gen II / Mark IV Big Block (396 / 402 / 427) 4.630in Bore .075in MLS-5 Head Gasket
