Cometic Ford SB 4.155 inch Bore .027 inch MLS Head Gasket (w/AFR Heads)

This Cometic Multi-Layer Steel (MLS) head gasket is built with a compressed thickness of 0.027 inches and a 4.155-inch bore, specifically designed for Ford SB engines when used with AFR heads that have a coolant eyebrow. MLS gaskets are a solid choice for high-output engines because they offer maximum sealing performance without needing any additional sealants, making them suitable for combinations of aluminum heads with either aluminum or cast iron blocks. They can handle the stresses that come from joining different metals.

The strength of these gaskets comes from their multiple layers of stainless steel, which also allow them to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. Viton is chosen for its ability to perform well in tough sealing situations, under various loads, and on different surface finishes. The center layer is uncoated stainless steel and can be varied to achieve different thickness requirements.

This gasket fits a wide range of Ford vehicles, including models like the Ford Bronco, Ford F-100, and AC Shelby Cobra, among many others. It's a well-built component for rebuilding or upgrading your engine's top end.