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Cometic MLS head gasket for Buick big-block V8 engines is specified for a 4.400-inch bore with a .027-inch compressed thickness. It uses multiple embossed stainless steel layers with Viton-coated outer faces to resist harsh sealing environments and provide rebound and corrosion resistance. The MLS design improves sealing across different head and block material combinations without requiring sealants.
Cometic Buick 400/430/455 V8 4.400 inch Bore .027 inch MLS Head Gasket
