Cometic's MLS cylinder head gasket for BMW M20B25/M20B27 fits an 85mm bore with 0.027 in thickness to restore reliable sealing on rebuilt engines. The gasket stacks multiple stainless steel layers with embossed outer layers coated in Viton to resist heat to 250°C (482°F) and corrosion. An uncoated center shim permits thickness variation while the embossed faces conform to surface finishes, distribute load and require less clamp load to reduce bore distortion.
Cometic Gasket BMW M20B25/M20B27 .027in MLS Cylinder Head Gasket - 85mm Bore