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The Cometic MLS head gasket for Mercury/Chevy big block with a 4.500-inch bore and .030-inch compressed thickness is a multi-layer steel gasket built for demanding sealing environments. Its embossed stainless steel outer layers are coated with Viton for heat resistance and corrosion protection, while the uncoated center shim layer provides thickness control. MLS construction requires no sealants and suits aluminum-to-aluminum or aluminum-to-iron applications.
Cometic Mercury / Chevy Big Block 4.5in Bore .030 inch MLS Head Gasket
