Cometic Mazda LF/L3 MZR Ford Duratec 20/23 .027in MLS Cyl Head Gasket-92mm Bore

This is a Cometic Multi-Layer Steel (MLS) cylinder head gasket, part number C5842-027. It's designed for a range of vehicles including the Mazda 3, Ford Focus, and Ford Ranger, featuring a 92mm bore and a thickness of .027 inches. This gasket is crucial for sealing the combustion chamber and preventing coolant and oil leaks between the cylinder head and the engine block.

Cometic builds these gaskets with multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping to resist corrosion. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This Viton coating is designed to work well in tough sealing environments and on various surface finishes, meaning you don't need to add any extra sealants during installation. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .027 inches on this particular gasket.

MLS head gaskets are a solid choice for both aluminum-to-aluminum and aluminum-to-cast iron engine configurations. They are well-suited for high-output engines because they can handle the shearing forces that can occur between different metal types.