Cometic GM LS1 SB 4.060in Bore .060 inch MLS Head Gasket

This is a Cometic Multi-Layer Steel (MLS) head gasket, specifically made for GM LS Gen-3 and Gen-4 small block V8 engines. It's designed with a 4.060 inch bore and a compressed thickness of 0.060 inches, making it a popular choice when rebuilding or modifying these popular V8s. MLS gaskets are built tough with multiple layers of stainless steel, which helps them resist corrosion and maintain their seal even under high output conditions. They are also designed to handle the differences between aluminum heads and cast iron blocks without issue.

The outer layers of this gasket are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This coating helps ensure a solid seal against the cylinder head and block surfaces, and the gasket doesn't require any additional sealants. The stainless steel construction not only adds strength but also allows the gasket to rebound, helping it maintain sealing pressure over time. This makes it a well-built option for engines that see a lot of action.

This gasket fits a wide range of GM vehicles, including many Chevrolet Silverado, Express vans, and Corvettes. It's a solid option for anyone looking to ensure a reliable seal for their LS engine build.