A pump assembly with an electric motor which includes a stator housing (6) and an electronics housing (4; 50) fastened at the outside on the stator housing (6). The electronics housing (4; 50) is connected to the stator housing (6) via at least one fastening element (24, 24′; 56). The fastening element is situated within an outer contour of the electronics housing (4; 50) which is delimited by the outer walls of the electronics housing (4; 50) and is accessible even with a closed electronics housing (4; 50).