Cometic Ford SB 4.200 inch Bore .040 inch MLS Head Gasket (w/AFR Heads)

This is a Cometic Multi-Layer Steel (MLS) head gasket specifically made for Ford SB engines with a 4.200 inch bore and a compressed thickness of .040 inch, intended for use with AFR heads that have a coolant eyebrow. You get two of these well-built gaskets in this package, ready to seal your engine's combustion chambers. MLS gaskets are a popular choice for high-output engines because they offer maximum sealing performance without needing any extra sealants.

Cometic builds these gaskets with multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. This construction is ideal for mating aluminum heads to either aluminum or cast iron blocks, as it can withstand the shearing forces that can occur between these different materials. The center layer is also stainless steel, allowing for adjustments in thickness to meet different engine build requirements.

This gasket is designed to fit a wide range of Ford vehicles, including models like the Ford Bronco, F-100, and E-Series vans, as well as AC Shelby Cobras and De Tomaso Mangustas. It's a solid option when rebuilding or upgrading your engine's top end, especially when using AFR cylinder heads.