The front unit (100) has a central carrier part (102) for accommodating coolers (104) and a locking device (110). Left and right headlamp carrier parts (120) are formed at an end (122) for fastening to the central part and at another end (124) for fastening to a wing fixing support (118). Each carrier part is made of plastic and formed with a steel profile for suspending a headlamp unit (128) between the ends. The central part and the carrier parts form a single cross beam of the front unit. The carrier parts have a positioning pin for aligning the headlamp unit relative to the carrier parts.
