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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.200in bore, nominal .045in) features embossed stainless steel outer layers coated with Viton and AMP for temperature and surface resistance; compressed operating thickness is 0.045". Its uncoated stainless center shim can be varied to meet thickness requirements, allowing the multilayer gasket to rebound under load, reduce clamp demands, and seal reliably between aluminum and iron without added sealants.
Cometic Pontiac 400/428/455 V8 .045in MLS Cylinder Head Gasket - 4.200in Bore
