Manufacturer Part Number: 2203290. However, it may not fit your car due to the many differences with specification and changes on model years. The best and the easiest way to quickly check if the part is right for you is to compare part numbers.
FORD TRANSIT TRAIL EXCEL O/S WING 2203290
FORD TRANSIT TRAIL EXCEL 690 L BATTERY BOX GK2T-10N669-B