The bush K 73112 is a precision bearing sleeve designed for installation in bearing housing K 73111 within the ZV40/48 raw water pump assembly. Its function is to provide a low-friction, wear-resistant support surface for the rotating shaft, ensuring correct alignment and smooth operation. Manufactured from materials optimized for lubrication retention and resistance to corrosion and mechanical stress, this bush reduces shaft wear and extends bearing service life. As a small but essential component, K 73112 contributes significantly to vibration control, operational stability, and the overall durability of the pump assembly.