Abstract: A fluid-cooled cylinder head construction for an internal combustion engine having two valves for inlet and two valves for exhaust with an injection nozzle or prechamber being arranged centrally of the valve chambers of the inlet and exhaust valves and with cooling fluid entry bores being arranged at the cylinder head circumference along a bottom wall of the cylinder head. Two cooling fluid chambers are provided and arranged one above the other with bores providing the communication between the upper and lower cooling fluid chambers. The lower cooling fluid chamber includes two outer chambers each of which is provided with a set of cooling fluid entry bores with a canal or channel being formed by the injection nozzle or prechamber in a central area which is connected with the outer chambers by two cooling canals arranged between the valve chambers of the inlet valves and the exhaust valves.