The He 111 was powered by several aircraft engines, including the BMW VI V-12 inline, the Daimler Benz DB 600 and DB 601 inverted V-12 powerplants, and the Junkers Jumo 211 series. The He 111H was the most widely produced variant of the medium bomber and mounted a pair of Jumo 211 inverted V-12 gasoline engines, generating from 1,300 to 1,340 horsepower and producing a maximum speed of 440 kilometres per hour (273 miles per hour). While its competitor, the DB 600, mainly powered fighters, the Jumo 211 was primarily a bomber engine utilising a direct fuel injection system, and was improved throughout World War II.
The H variant, the most widely produced He 111 model, was powered by a pair of Jumo 211 inverted V-12 gasoline engines
Ground mechanics have removed one of the engines from this He 111 to perform maintenance. Note the inverted engine configuration