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A Cometic MLS head gasket for Chevrolet Big‑Block Mark‑IV V8 engines with a 111.125mm (4.375in) bore and a compressed thickness of .040in. These multi‑layer steel gaskets use embossed outer layers coated with Viton to resist heat and corrosion, plus an uncoated stainless shim layer to control thickness. MLS construction provides strong sealing for high‑output engines without the need for sealants.
Cometic Chevrolet BB 111.125mm Bore .040in MLS 396/402/427/454 Head Gasket
