Cometic Chevy Gen1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.004in Bore

If you're working on a Chevy Gen 1 Small Block V8 and need a new head gasket, this Multi-Layer Steel (MLS) gasket from Cometic is a solid option. It's designed with a 4.004-inch bore and a compressed thickness of 0.036 inches, making it suitable for engines that have been bored out by 0.040 inches. This gasket fits a wide range of vehicles from the early 1980s, including popular models like the Chevrolet C10, Camaro, and GMC C1500 trucks.

Cometic builds these gaskets with multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping to prevent leaks. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and works well with both aluminum and cast iron blocks. This construction means you don't need to use any extra sealants; the gasket is ready to seal right out of the box. The center layer is stainless steel and can be varied to achieve different thicknesses, but this specific gasket is set up for a 0.040-inch overbore.