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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.300in bore, nominal .080in) combines embossed stainless steel layers with Viton-coated outer faces and AMP to handle harsh sealing environments. Compressed operating thickness is 0.027". An uncoated stainless shim lets builders tailor stack-up while the multilayer design resists corrosion, conforms load across the sealing area, and eliminates the need for sealants.
Cometic Pontiac 400/428/455 V8 .080in MLS Cylinder Head Gasket - 4.300in Bore
