SEE the rest of parts for product:
Roof
Roof
Roof air deflector that is adjustable for various body heights. The truck must be equipped with a roof rail, see part numbers 1408241 and 1376694. With the roof air deflector, you not only present a more dynamic appearance but your air resistance is lowered, which in turn lowers fuel consumption. The range of adjustments for the roof air deflector means that an optimum aerodynamic solution is possible for all trucks.