Cylinder head for Nissan QR25

The cylinder head 1104103J55 is a component for the Nissan QR25 engine. It seals the top of the cylinders to form the combustion chamber and houses essential engine elements, including intake and exhaust valves, valve seats, and valve guides. The component also contains internal passages for engine coolant and oil circulation. It is engineered to maintain a tight seal against the engine block, which is necessary for sustaining proper compression and preventing the leakage of combustion gases or fluids.

This component is compatible with the Nissan QR25 engine platform. It is manufactured to meet the specific design requirements of this engine series to ensure correct fitment and function. The manufacturer of this part is Nissan.

A cylinder head functions as the upper closure of the engine cylinders. By housing the valve train and providing the necessary ports for air-fuel intake and exhaust gas exit, it facilitates the engine combustion cycle. Maintaining the integrity of the cylinder head is necessary for the engine to operate within its designed parameters for power output and thermal management.