The Ju 188 was designed to be fitted with either the Jumo 213A or BMW 801 G-2 engines without any changes to the airframe, with the exclusion of the re-design for Jumo-powered examples, of the annular radiators from their Jumo 211 layout for the A-series to better match the more powerful 213's cooling needs, while using similar broad-chord three-blade propellers as the A-series did. It was intended that both would be known as A models but the naming was later changed: the Ju 188A model powered by the 213 and the Ju 188E by the 801.