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The Cometic MLS head gasket for the BMC 1275 A‑Series (.066" compressed thickness, 73mm bore) uses multiple embossed AMP-coated and uncoated stainless layers to deliver sealing suited to 73mm bore engines. It’s specified where a thicker MLS gasket is required. Outer layers are Viton-coated and the center shim accommodates thickness variation, helping distribute clamp load and resist harsh sealing environments.
Cometic BMC 1275 A-Series .066in MLS Cylinder Head Gasket - 73mm Bore
