The Sulzer ZV 40/48 engine features a shut-off piston for the shaft, with the component identified by code number K 46113. This piston, often referred to by its shaft designation K 46111, plays a critical role in controlling and regulating the flow of fuel or other fluids within the engine. By enabling precise shut-off functions, this piston ensures proper engine operation and helps prevent potential malfunctions or inefficiencies. Proper maintenance and timely replacement of this part are vital for preserving engine performance and preventing costly breakdowns in marine and industrial applications.