The ornamental design of the fifth-wheel hitch-release lever and hook, as shown and described above.
FIG. 1 is a perspective view of the fifth-wheel hitch-release lever and hook of the new design; and,
FIG. 2 is an elevation view of the fifth-wheel hitch-release lever and hook of FIG. 1. Detail of the opposite side of the fifth-wheel hitch-release lever and hook of FIG. 2 is identical to the elevation view of FIG. 2.