The assembly spray nozzles, code 11.01213-0063.0, play a crucial role in the precise distribution of lubricating or cooling media within the MAN L21/31 engine, ensuring optimal operating conditions for heavily loaded components. Designed for accurate flow characteristics and uniform atomization, these nozzles enable targeted delivery of oil to critical contact surfaces, reducing friction, controlling temperature, and minimizing wear. Their high-quality materials and finely machined internal geometry guarantee consistent performance, resistance to clogging, and long service life even in harsh operating environments. By maintaining efficient lubrication and thermal balance, the spray nozzle assembly directly supports engine efficiency, component longevity, and overall operational safety.