Cometic GM LS1 SB 4.130 inch Bore .030 inch MLS Head Gasket

Cometic Gasket is a well-known name for creating solid sealing solutions, and this Multi-Layer Steel (MLS) head gasket is built to handle the demands of high-output GM LS engines. It's designed with multiple embossed layers of stainless steel, featuring an outer layer coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F. This construction means the gasket seals effectively without needing additional sealants, making it suitable for pairings like aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as it can manage the shearing forces between different metals.

The multi-layer steel design not only increases the gasket's strength but also allows it to rebound and resist corrosion. The specific center shim layer is uncoated stainless steel, and its thickness can be varied to meet different requirements, with this particular gasket having a compressed operating thickness of 0.030 inches and a bore size of 4.130 inches. This gasket fits a wide range of GM LS Gen-3 and Gen-4 small block V8 engines, including popular models like the Chevrolet Corvette, Chevrolet Silverado, and Cadillac CTS.