The liner bearing code K 73122 is an inner protective sleeve designed for use within the raw water pump of the Sulzer ZV40/48 diesel engine. It serves as a wear-resistant interface between the pump housing and the rotating shaft, shielding structural components from abrasion and corrosion. Manufactured from durable, corrosion-resistant materials, the liner extends the life of the pump and helps maintain performance by ensuring smooth water flow and reduced mechanical wear. It's a key part of preserving cooling system efficiency in demanding marine environments.