The Sulzer ZV40/48 engine, known for its robust performance in marine and industrial applications, employs a self-locking nut for securing the oil sump, ensuring reliability and safety during operation. The specific self-locking nut, identified by code number K 11822, plays a critical role in maintaining the integrity of the oil sump attachment, preventing loosening due to vibrations and thermal expansion. This precision-engineered component enhances the overall durability and maintenance efficiency of the Sulzer ZV40/48 engine, reflecting Sulzer's commitment to high-quality and dependable engineering solutions.