Cometic GM LS1 SB 3.910 inch Bore .075 inch MLS-5 Head Gasket

This is a Cometic MLS-5 head gasket, designed for GM LS Gen-3/4 small block V8 engines. You get one head gasket in this package, featuring a 3.910-inch bore and a compressed thickness of 0.075 inches. This type of gasket is built with multiple layers of stainless steel, which gives it strength and helps it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that handles tough sealing jobs well, making it suitable for both aluminum and cast iron blocks.

The multi-layer steel construction is key here, especially for high-output engines. It's designed to provide a strong seal without needing any extra sealants, which simplifies installation. The Viton coating on the outer layers is rated for high temperatures, up to 482 degrees Fahrenheit, and it's made to handle different surface finishes and sealing conditions. The center layer is stainless steel and can be varied in thickness to meet different engine build needs.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Corvette, Cadillac CTS, and GMC Sierra 1500. It's a well-built component for rebuilding or working on the top end of your LS engine.