Cometic GM LS1 SB 3.910 inch Bore .030 inch MLS Head Gasket

If you're rebuilding the top end of your GM LS Gen-3 or Gen-4 small block V8, getting the right head gasket is crucial for a solid seal. This Cometic Multi-Layer Steel (MLS) head gasket is built for a 3.910 inch bore and has a compressed thickness of .030 inches, making it a popular choice for many performance and stock applications across a range of GM vehicles.

Cometic uses multiple layers of stainless steel for increased strength and rebound, which helps resist corrosion and maintain sealing pressure. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes, even when mating aluminum heads to cast iron blocks. Because they're MLS gaskets, they don't require any additional sealants, simplifying the installation process.

This gasket is designed to fit a wide variety of GM LS engines found in vehicles like the Chevrolet Corvette, Silverado, and GMC Sierra. Make sure to check the fitment data to confirm it's the right choice for your specific build.