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The Cometic MLS head gasket for Pontiac 400/428/455 V8, nominal .040in thickness and 4.160in bore, is constructed from multiple embossed stainless-steel layers with Viton-coated outer layers. MLS technology improves sealing for high-output engines, resists corrosion and handles dissimilar head/block material interfaces; compressed operating thickness is listed at about 0.027in and no sealants are required for installation.
Cometic Pontiac 400/428/455 V8 .040in MLS Cylinder 4.160in Bore
