Cometic Chevy Small Block 4.060 inch Bore .066 inch MLS-5 Head Gasket (18 or 23 Deg. Heads)

Cometic Gasket is well-known for making solid sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example of their work. It's built for Chevrolet Gen-1 Small Block V8 engines with a 4.060 inch bore and is designed for either 18 or 23-degree cylinder heads. This gasket is a round bore type, measuring a compressed thickness of 0.066 inches, which is crucial for maintaining proper compression ratios in performance applications.

What makes this gasket stand out is its construction. It uses multiple layers of stainless steel for increased strength and resistance to corrosion, which is important for longevity. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit, ensuring a reliable seal even under demanding conditions. This type of construction means you don't need to use any additional sealants, making installation more straightforward. It's suitable for combinations of aluminum heads with aluminum blocks or aluminum heads with cast iron blocks, as it can handle the shearing forces that can occur between different metals.

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's a solid option if you're rebuilding the top end of your small block Chevy and need a dependable seal.