Cometic Chevy Small Block 4.200 inch Bore .120 inch MLS Head Gasket (w/All Steam Holes)

Cometic Gasket is known for making well-built sealing components, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s designed for Chevy Gen-1 Small Block V8 engines with a 4.200-inch bore and a compressed thickness of 0.120 inches. This gasket is built to handle the demands of high-output engines, offering a robust seal without needing additional sealants.

This MLS gasket is constructed from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion. 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 construction makes it suitable for pairings like aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as it can manage the shearing forces that can occur between different metals. The center layer is stainless steel and can be varied in thickness to meet specific requirements.

This gasket fits a wide range of vehicles, including popular models like the Chevrolet C10, Camaro, and Corvette from the early to mid-1980s. It includes all steam holes, which are important for proper coolant flow and temperature regulation in the engine block.