2016 FORD, F550 XL SD Medium Duty Trucks - Service Trucks / Utility Trucks / Mechanic Trucks, This 2016 Ford F-550 XL Super Duty Service Truck is designed for utility and reliability, making it suitable for various work applications.Suspension: Spring Suspension.Body Length: 11 ft 1 in (Knapheide body).Serial Number: 1FD0W5GY3GEB17121