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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.300in bore, nominal .086in) features multiple embossed stainless steel layers with Viton-coated outer surfaces and AMP treatment. Compressed operating thickness is 0.036". The center shim layer is uncoated stainless steel to accommodate thickness needs, delivering robust sealing for mixed head/block materials, improved load distribution, and reduced clamp load without additional sealants.
Cometic Pontiac 400/428/455 V8 .086in MLS Cylinder Head Gasket - 4.300in Bore
