The Sulzer ZV 40/48 is a robust diesel engine widely used in maritime and industrial applications. A key component for its raw water pump, the bush with code number K 73121, plays a vital role in maintaining smooth and efficient pump operation. This bush acts as a bearing surface, reducing friction and wear between moving parts while ensuring the pump operates reliably under high-pressure and high-temperature conditions. Regular inspection and replacement of the bush as part of routine maintenance are crucial for preserving the raw water pump's functionality and the overall performance of the engine system.