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The Cometic multi-layer steel (MLS) head gasket for Chevy small block features a 4.125-inch bore and .023-inch compressed thickness, with all steam holes. Constructed from embossed stainless-steel layers with Viton-coated outer faces and an uncoated stainless shim layer, it provides strong sealing without sealants. MLS construction resists corrosion and accommodates differing head and block materials under load.
Cometic Chevy Small Block 4.125 inch Bore .023 inch MLS Head Gasket (w/All Steam Holes)
