The guide piece with code number K 27403 plays a crucial role in the precise operation of the starting valve in the Sulzer ZV40/48 diesel engine. It ensures accurate alignment and stable movement of internal components within the valve mechanism, contributing to reliable air delivery during the engine's startup phase. Designed for durability and precision, this component must endure high-pressure conditions and mechanical stress. Its proper function is vital to maintaining the integrity and performance of the starting system, which is essential for smooth and safe engine ignition in marine and industrial applications.