The spray-nozzle with code 11.01227-0017.A is engineered to provide critical cooling and lubrication to high-heat zones inside the MAN L21/31 engine, such as the piston undersides and cylinder walls. Operating under pressure, it ensures optimal oil atomization and precise fluid delivery, reducing wear and enhancing performance. This component is vital in maintaining thermal balance and extending the service life of engine internals in marine and industrial applications.