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The Cometic MLS cylinder head gasket for Chevrolet Gen‑1 Small Block V8 (4.200" bore, 0.070" compressed thickness) is specified for round‑bore, 18/23° heads and supplied with steam holes. Multiple embossed stainless layers with Viton/AMP coatings and an uncoated center shim provide rebound, corrosion resistance and accurate thickness control. It seals aluminum-to-aluminum or aluminum-to-cast-iron interfaces without sealants and helps reduce clamp load-related bore distortion.
Cometic Chevy Small Block 4.200 inch Bore .070 inch MLS-5 Head Gasket (w/All Steam Holes)
