The spray nozzle, code 11.01227-0016.A, plays a critical role in delivering fine, high-pressure streams of lubricating or cooling fluids inside the MAN L21/31 engine. Positioned to target precise areas such as piston undersides or valve mechanisms, it ensures optimal thermal regulation and friction reduction. The nozzle's performance directly affects engine efficiency and component protection, making it indispensable for sustained, high-performance operation.