Cometic GM LS1 SB 4.190 inch Bore .030 inch MLS Head Gasket

This Cometic Multi-Layer Steel (MLS) head gasket is built with a specific 4.190 inch bore and a compressed thickness of 0.030 inches, making it a solid choice for GM LS1 engines and many other LS Gen-3/4 V8 applications. The multi-layer stainless steel construction offers increased strength and resilience, helping it handle the demands of high-output engines. These gaskets are designed to seal effectively without needing any additional sealants, simplifying installation whether you're working with aluminum heads on aluminum blocks or aluminum heads on cast iron blocks.

The outer layers of this gasket are embossed and coated with Viton, a heat-resistant rubber material capable of withstanding temperatures up to 482 degrees Fahrenheit. This Viton coating is crucial for meeting the sealing challenges presented by harsh environments and varying surface finishes. The center layer is uncoated stainless steel, providing a robust foundation. This well-built design helps prevent the shearing forces that can occur between different metal types, ensuring a reliable seal over time and resisting corrosion.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Corvette, Cadillac CTS, and Chevrolet Silverado 1500. It's a popular option for engine rebuilds and performance upgrades where a dependable seal is critical.