Cometic GM LS1 SB 4.130 inch Bore .027 inch MLS Head Gasket

When you're rebuilding the top end of your GM LS Gen-3 or Gen-4 small block V8, getting the head gasket right is crucial for a solid seal. This Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of high-output engines, fitting a wide range of vehicles from Chevrolet Camaros and Corvettes to Cadillac CTS models and more.

Cometic uses multiple layers of stainless steel for strength and corrosion resistance. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. This design means the gasket requires no additional sealants and is well-suited for joining aluminum heads to either aluminum or cast iron blocks, as it can manage the shearing forces between different metals. The compressed operating thickness is a precise 0.027 inches, with a bore size of 4.130 inches, ensuring a proper fit for your specific LS engine build.