Cometic 2009 Mazda 2.5L DISI 90mm Bore .051in MLS Head Gasket

If you're working on a Mazda 3, 6, CX-7, MX-5 Miata, or a Ford Fusion and need to replace the head gasket, this Multi-Layer Steel (MLS) gasket from Cometic is a solid option. It's built for the 2.5L DISI engine with a 90mm bore and a compressed thickness of .051 inches, designed to seal the combustion chamber effectively.

This gasket uses multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing jobs without needing extra sealants. This construction makes it suitable for mating aluminum heads to either aluminum or cast iron blocks, as it can manage the stresses that come from different metals expanding at different rates. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .051 inch on this particular gasket.

This gasket is a good choice for engines that see higher output, as the MLS design offers improved sealing performance over traditional one-piece gaskets.