The coupling halves identified by code K 72120 form a mechanical link between the drive shaft and the geared pump in the Sulzer ZV40/48 engine. Designed to transmit torque smoothly and absorb minor misalignments, these coupling halves ensure reliable power transfer under high load and continuous use. Their precise fit and robust construction help maintain the integrity of the pump assembly, contributing to the overall reliability and efficiency of critical systems such as lubrication or fuel delivery.