Cometic BMW S55B30T0 85mm Bore .044in MLX Head Gasket

If you're working on the S55B30T0 engine in your 2015-2020 BMW M4, M3, or M2, this Cometic MLX head gasket is built to handle the demands of a high-output powerplant. It's designed with an 85mm bore and a compressed thickness of .044 inches, ensuring a solid seal between your cylinder head and block.

This gasket is constructed from multiple layers of stainless steel, which gives it strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes without needing additional sealants. The center layer is also stainless steel, and Cometic uses these layers to achieve precise thickness requirements, like the .044 inch on this particular gasket.

Because these are Multi-Layer Steel (MLS) gaskets, they're well-suited for applications using aluminum heads with either aluminum or cast iron blocks. They can effectively manage the different expansion rates between these materials, providing a durable seal for your engine build.