Cylinder head for Alfa Romeo HS492

The cylinder head, part number 91151657, mounts to the top of the engine block to form the combustion chamber. This component houses the valve train, including valve seats and guides, and provides the necessary ports for intake and exhaust gas flow. It also includes the specific mounting locations for fuel injectors and spark plugs required for engine operation.

This part is compatible with the Alfa Romeo HS492 engine. It manages the internal pressures and thermal loads generated during the combustion cycle while facilitating the circulation of engine coolant to maintain operating temperatures.

A cylinder head functions as the upper seal for the engine cylinders. By maintaining the integrity of the combustion chamber, it ensures the compression levels required for engine power and efficiency. Proper installation and sealing of the head are necessary to prevent fluid leaks between the oil and coolant passages and to maintain the mechanical timing of the valve train.