The cylinder head is the metal casing which covers the engine. It seals the main cylinders of the engine and prevents oil and other substances from finding their way inside. It also contains a number of valves vital to the engine. Internally the cylinder head has passages called ports for the fuel / air mixture to travel to the inlet valves from the intake manifold, for exhaust gases to travel from the exhaust valves to the exhaust manifold and for antifreeze to cool the head and engine.
A cracked or otherwise damaged cylinder head can cause serious irrevocable damage to a car engine and so it must be in good condition. Aging

cylinder heads

and car brake valves can become warped and must be replaced. Browse eurocarparts.com or call us to find the right engine parts for your car.