Cometic GM LS1 SB 3.910in Bore .086in Thick MLS Head Gasket

Cometic Gasket is a well-known name for creating solid sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s built for GM LS Gen-3/4 small block V8 engines, fitting a wide range of vehicles like the Chevrolet Silverado, GMC Sierra, and Cadillac CTS. This gasket is designed to handle the demands of high-output engines, ensuring a reliable seal between your cylinder head and engine block.

What makes this gasket stand out is its construction. It’s made from multiple layers of stainless steel, which gives it increased strength and the ability to resist corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F and works well in tough sealing environments. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .086 inch thickness on this particular gasket, which has a 3.910 inch bore. This design means it can be used with both aluminum and cast iron blocks without issue, and it doesn't require any extra sealants.