A device for reinforcing a cross member (1) in a driving position of a motor vehicle, the cross member (1) being adapted to extend laterally into a vehicle under an upper part of an instrument panel supported by the cross member, The device comprises at least one reinforcing tube (3) adapted to be connected to the beam (1) to connect the beam to a vehicle structural member arranged at the vehicle floor level, The reinforcing tube (3) has a lower end (30), the lower end (30) has at least one connection port, and the connection port passes through (31 ') parallel to the transverse center line of the vehicle,The reinforcement device is characterized in that the fixing hole through (31 ') presents a closed profile on itself, The contour line has a general emitter shape, and the tip of the contour line faces the lower free edge (32) of the lower end of the reinforcing leg.Figure published with summary: figure 2B
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