The Sulzer ZV 40/48 diesel engine is a robust and efficient marine and power generation engine known for its reliability and durability in demanding environments. One of the critical maintenance components for this engine is the reamed bolt for the oil cup, identified by code number K 12033. This bolt plays a crucial role in securing the oil cup, ensuring proper lubrication throughout the engine's operation. Precision in the reaming process allows for an accurate fit, reducing wear and potential leaks, which is vital for optimal engine performance and longevity. Regular inspection and maintenance of parts like the reamed bolt contribute to the engine's overall efficiency and reliability.