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The Cometic MLS head gasket for the BMC 1275 A‑Series (.040" compressed thickness, 73mm bore) provides a multi-layer steel sealing option matched to the 73mm bore specification. It’s intended to offer consistent combustion sealing for that engine family. Embossed outer layers are coated with Viton and the center shim layer allows thickness variation, helping distribute clamp load and reduce bore distortion without added sealants.
Cometic BMC 1275 A-Series .040in MLS Cylinder Head Gasket - 73mm Bore
