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The cylinder head houses the combustion chambers, intake and exhaust valves, and passages for air and fuel flow, sealing the top of the engine cylinders.

Symptoms include coolant leaks, white smoke from the exhaust, overheating, and loss of engine power.

Minor damage can sometimes be repaired, but significant cracks or warping typically require replacement to ensure engine integrity.

Performance cylinder heads improve airflow and combustion efficiency, leading to increased horsepower and torque.