Note :
– A head gasket is a gasket that sits between the engine block and cylinder head(s) in an internal combustion engine.
– Its purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders; as such, it is the most critical sealing application in any engine, and, as part of the combustion chamber, it shares the same strength requirements as other combustion chamber components.