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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.200in bore, nominal .070in) combines embossed stainless steel layers with Viton and AMP outer coatings; compressed operating thickness is 0.070". The uncoated stainless center shim can be varied to meet thickness needs, enabling the multilayer gasket to conform load distribution, resist corrosion, lower clamp requirements, and provide dependable, sealant-free sealing between aluminum and iron components.
Cometic Pontiac 400/428/455 V8 .070in MLS Cylinder Head Gasket - 4.200in Bore
