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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.410 inch bore) uses embossed, Viton-coated stainless steel outer layers and an uncoated stainless center shim, with a compressed thickness of 0.056 inch. MLS construction seals reliably without sealants, withstands shearing between dissimilar metals, rebounds under load, and improves clamp-load distribution to reduce bore distortion while resisting corrosion in high-output engine applications.
Cometic Pontiac 400/428/455 V8 .051in MLS Cylinder Head Gasket - 4.410in Bore
