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Cometic GM Gen-V/VI Big Block V8 multi-layer steel head gasket is specified for a 4.375-inch bore with a .066 in compressed thickness and embossed outer layers coated with Viton. The MLS construction combines multiple stainless steel layers with a center uncoated shim to manage load distribution, reduce clamp requirements and provide sealing across demanding engine sealing surfaces.
Cometic Chevy BB 4.375in Bore .066 inch MLS 396/402/427/454 Head Gasket
