Abstract: The invention relates to a pre-assembled constructional unit (1) of a fresh air system (2) for an internal combustion engine, especially of a motor vehicle. Said constructional unit comprises an electrical unit (3) having respective coils (5) for a plurality of cylinders of the internal combustion engine for actuating a fuel injection valve, said electrical unit having an electric wiring (6) for actuating the coils (5), a plurality of parallel insertion openings (10) that extend coaxially through the coils (5), and a plastic element (9) that is injection-molded on the coils (5) and the wiring (6).