Cometic 07-16 Harley-Davidson 3.937in Bore .040 Head Gasket Complete Gasket Kit

This Cometic head gasket kit is built with a 3.937-inch bore and a .040-inch thickness, specifically for 2007-2016 Harley-Davidson motorcycles. These gaskets are crucial for sealing the combustion chamber and preventing leaks between the cylinder head and the engine block, ensuring your engine runs smoothly and efficiently. The precise bore size and thickness are designed to match your Harley's specific engine configuration, which is key for maintaining optimal compression and preventing coolant or oil from entering the combustion chamber.

Cometic uses advanced multi-layer steel (MLS) construction for these gaskets. This means they are made from several layers of steel, each with a special coating. This design allows the gasket to handle the high pressures and temperatures found in a motorcycle engine, offering a strong seal that resists blowing out. The .040-inch thickness is an undersize specification, often used when engine components have been machined or when a slight adjustment to compression ratio is desired. This kit includes all the necessary gaskets to properly seal your engine's top end during a rebuild or repair.