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The Cometic MLS head gasket for Chevrolet 4.3L Gen‑1 90° V6 (4.120 in bore) has a compressed operating thickness of 0.051 in and a multi‑layer stainless steel composition. Viton‑coated embossed outer layers provide heat‑resistant sealing while the uncoated center shim allows for thickness variation. MLS gaskets are made to seal aluminum‑to‑aluminum or aluminum‑to‑cast‑iron applications without sealants, offering rebound, corrosion resistance, and reduced clamp load on the bore.
Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .051in MLS Cylinder Head Gasket - 4.120in Bore
