Cometic GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 .030in. MLS Cylinder Head Gasket 4.100in. Bore

Starting with a .030 inch undersize bore and a multi-layer steel (MLS) construction, this Cometic head gasket is built for the demands of GM LS Gen-3 and Gen-4 small block V8 engines. The multiple layers of stainless steel provide increased strength and resistance to corrosion, while the outer layers are coated with Viton, a heat-resistant rubber material capable of handling temperatures up to 482 degrees Fahrenheit. This design ensures a strong seal between aluminum heads and either aluminum or cast iron blocks, effectively managing the shearing forces that can occur between dissimilar metals.

The Viton coating on the embossed outer layers is designed to meet the challenges of harsh sealing environments, varying load conditions, and different surface finishes, making it a solid choice for high-output engines. The center shim layer is uncoated stainless steel and can be varied to achieve different compressed thicknesses, allowing for precise tuning. These gaskets are designed to provide maximum sealing performance without the need for additional sealants, simplifying installation for a wide range of GM vehicles.

This gasket is a popular choice for many GM LS-powered vehicles, including models like the Chevrolet Corvette, Cadillac CTS, and Chevrolet Silverado 1500. Its robust construction and advanced materials make it suitable for rebuilding top ends or replacing worn head gaskets on these popular V8 platforms.