The flexible rod K 72135 is a complete transmission component used in the drive system of the cylinder lubricating pump in the Sulzer ZV40/48 engine, designed to transfer motion and force between connected elements while accommodating slight misalignments and dynamic movement. Engineered for operation under continuous load, vibration, and mechanical stress, this assembly ensures smooth and reliable actuation of the lubrication pump drive. Its flexible design minimizes stress concentrations and reduces the risk of fatigue or mechanical failure in connected components. Manufactured from high-strength, wear-resistant materials, the K 72135 flexible rod plays a critical role in maintaining consistent lubrication delivery, supporting engine protection, and ensuring long-term operational reliability.