Cometic BMW M50B25/M52B28 Engine 85mm .030 inch MLS Head Gasket 323/325/525/328/528

This Cometic Multi-Layer Steel (MLS) head gasket is built with multiple embossed stainless steel layers, featuring a Viton rubber coating on the outer layers. The compressed operating thickness is precisely 0.030 inches, designed to provide maximum sealing performance for high-output BMW M50B25 and M52B28 engines. MLS gaskets are well-suited for both aluminum-to-aluminum and aluminum-to-cast iron block configurations, as they can handle the shearing forces that arise between dissimilar metals.

The strength of these MLS gaskets comes from their layered stainless steel construction, which also allows them to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant elastomer capable of withstanding temperatures up to 482°F (250°C). Viton is chosen for its ability to perform reliably in harsh sealing environments, under various load conditions, and on different surface finishes. The center shim layer is uncoated stainless steel, allowing for adjustments to meet different thickness requirements.

This gasket fits a range of BMW models including the 323i, 325i, 328i, 525i, 528i, and Z3. It requires no additional sealants for installation, making it a straightforward component for engine rebuilds or repairs.