Cometic BMW S54 3.2L 87.5mm 2000-UP .040 inch MLS Head Gasket M3/ Z3/ Z4 M

When you're rebuilding the top end of your S54 engine, a solid head gasket is crucial for sealing the combustion chamber and coolant passages. This Multi-Layer Steel (MLS) head gasket from Cometic is built for the demands of high-output engines like the BMW S54 3.2L. It's designed to provide maximum sealing performance without needing any extra sealants.

This gasket is constructed from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion and shearing forces. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. The center layer is uncoated stainless steel, and its thickness can be varied to meet different requirements; in this case, it's set to a compressed operating thickness of 0.040 inches with an 87.5mm bore, specifically for your M3, Z3, or Z4 M.

This gasket is a good option for both aluminum-to-aluminum and aluminum-to-cast iron block configurations. It's a well-built component designed to handle the pressures and temperatures found in performance BMW engines.