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Cometic MLS head gaskets for Chevrolet Mark IV big block V8 (4.630in bore, .070in compressed thickness) are multi-layer stainless steel gaskets with embossed outer layers coated in Viton. MLS construction provides rebound, corrosion resistance and strong sealing for high-output engines without sealants. The uncoated stainless steel shim center layer can vary to meet thickness needs while reducing required clamp load and bore distortion.
Cometic GM Gen II / Mark IV Big Block (396 / 402 / 427) 4.630in Bore .070in MLS-5 Head Gasket
