What is a Head Gasket and what is its Purpose?

              A head gasket is a gasket that sits between the engine block and the cylinder head in an internal combustion engine. The purpose of the head gasket is to create a seal for the cylinders to provide the most compression and to help prevent the engine coolant or engine oil from leaking into the cylinders. It is the most important sealing application in any engine. Because it is part of the combustion chamber, it has the same streng...