The Sulzer ZV 40/48 diesel engine is a powerful and robust marine engine designed for efficiency and reliability in demanding maritime environments. One critical component of this engine is the control ring for the operating piston, which plays a vital role in regulating fuel injection and ensuring optimal engine performance. The control ring, identified by the code number K 34121, is engineered to precisely manage the movement of the piston, contributing to smooth engine operation and efficient combustion. Proper maintenance of this component is essential for the longevity and efficiency of the Sulzer ZV 40/48 engine.