Cometic BMW 318/Z3 89-98 86mm Bore .040 inch MLS Head Gasket M42/M44 Engine

This Cometic Multi-Layer Steel (MLS) head gasket is built with an 86mm bore and a compressed thickness of 0.040 inches, specifically for the M42 and M44 engines found in your 1991-1998 BMW 318i, 318is, 318ti, and 1996-1998 Z3. MLS gaskets are a strong choice for high-output engines because they are made from multiple layers of stainless steel, which helps them resist corrosion and maintain their shape under stress. This construction also means they don't require any extra sealants to do their job effectively, making installation more straightforward.

The outer layers of this gasket are embossed and coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This makes it suitable for sealing between aluminum heads and either aluminum or cast iron blocks, as it can manage the different expansion rates and shearing forces that occur. The center layer is also stainless steel, providing a solid foundation that can be varied in thickness to meet specific engine needs.