OEM Vehicle Cylinder Heads

Cylinder heads are responsible for protecting the many engine parts. A housing made of either cast iron or aluminum, it sits on top of the engine block and does three things.

What Do Cylinder Heads Do?

First, a cylinder head pulls both air and fuel into the engine while discharging exhaust gases. The cylinder heads also help to move coolant to the engine in order to keep parts cooled and running their best. Lastly, the cylinder heads work with the head gasket to keep the coolant and oil from fouling the combustion chamber.

What Types of Cylinder Heads Are There?

Today's SUVs, cars, pickups, and vans typically feature one of three types of cylinder head. Flatheads mostly protect the cylinder blocks, and have no moving parts. Overhead valves sit below the camshafts and feature pushrods and valves to maintain a smooth flow of air. Overhead camshafts have the camshaft placed within them, meaning you don't need pushrods. These are the most efficient type, since they produce the most optimal airflow of all.

How Do You Spot Cylinder Head Problems?

Even the best cylinder heads can eventually fail. Signs of trouble include:

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