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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.300in bore, nominal .092in) uses embossed stainless steel outer layers coated with Viton and AMP for resistance to heat and surface variation. Compressed operating thickness is 0.036". A central uncoated shim layer permits thickness tuning while the multilayer construction rebounds under load, resists corrosion, and seals reliably between aluminum and iron without sealants.
Cometic Pontiac 400/428/455 V8 .092in MLS Cylinder Head Gasket - 4.300in Bore
