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The Cometic MLS head gasket for Pontiac 400/428/455 V8 engines is a 4.380" bore, 0.060" compressed-thickness multi-layer steel gasket. Its embossed outer layers are coated with Viton for heat resistance and sealing, while an uncoated stainless shim layer provides thickness control. MLS construction rebounds, resists corrosion and requires no sealants, making it suitable for demanding, high-output applications.
Cometic Pontiac 428 / 455 V8 4.380in Bore .060in MLS-5 Head Gasket
