Buy 2003 Ford F-150 5.4L Triton V8 CNG M/T RWD XLT Extended Cab Pickup Fleetside Roof Side Rail (Front) - OEM Ford Part # XL3Z1851143AA (XL3Z-1851143-AA)

Rail.
Panels that run above the doors along each side of the vehicle that the roof Panel attaches to. Panel Assembly - Inner. Roof Side.

Roof Side Rail

Fits F-150, F-150 Heritage, F-250

SUPER CAB 4 DOOR.