Which item is not a part of a cylinder head?

Which item is not a part of a cylinder head?

• A. Radiator
• B. Camshaft
• C. Spark plug
• D. Valves

Answer: (A)

The cylinder head contains the parts involved in the combustion process and the valve train, including where the spark plug threads in and where the valves sit to control intake and exhaust. In many engine designs, the camshaft is also housed in the cylinder head, especially in overhead cam configurations. The radiator, on the other hand, is part of the cooling system; it’s a separate heat exchanger that cools the engine coolant as it circulates. It isn’t located in or part of the cylinder head, though the coolant it holds flows through passages in the head to absorb heat. So the item that isn’t part of the cylinder head is the radiator.

The cylinder head contains the parts involved in the combustion process and the valve train, including where the spark plug threads in and where the valves sit to control intake and exhaust. In many engine designs, the camshaft is also housed in the cylinder head, especially in overhead cam configurations. The radiator, on the other hand, is part of the cooling system; it’s a separate heat exchanger that cools the engine coolant as it circulates. It isn’t located in or part of the cylinder head, though the coolant it holds flows through passages in the head to absorb heat. So the item that isn’t part of the cylinder head is the radiator.