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The Cometic MLS cylinder head gasket for Chevrolet Gen‑1 Small Block V8 (4.200" bore, 0.089" compressed thickness) is intended for round‑bore, 18/23° heads and supplied with steam holes. It combines embossed stainless outer layers coated in Viton/AMP with an uncoated shim core to control thickness and rebound. The gasket seals aluminum-to-aluminum and aluminum-to-iron applications without additional sealants, resists corrosion and helps distribute clamp load to limit bore distortion.
Cometic Chevy Small Block 4.200 inch Bore .089 inch MLS-5 Head Gasket (w/All Steam Holes)
