The cylinder unit, code P50515-19, represents the core combustion module of the MAN L21/31 engine, consisting of the cylinder liner, piston, piston rings, connecting rod, and associated components. This integrated assembly is engineered to withstand extreme pressures and temperatures generated during the combustion process. Its high-performance design ensures efficient power generation, minimal wear, and ease of replacement during overhauls. As the heart of each engine cylinder, the unit is vital for delivering reliable propulsion and energy output over long operational cycles.