The Daimler-Benz DB 603 is a liquid-cooled V12 aircraft engine developed in Germany during World War II. It was designed for high performance and reliability, producing around 1,750 horsepower. The engine was primarily used in various military aircraft, including the Messerschmitt Me 410 and the Dornier Do 217. This engine featured advanced technologies for its time, such as a supercharger and a direct fuel injection system. Its design contributed to the overall effectiveness of the aircraft it powered, making it a significant component in the Luftwaffe's operations during the war.