An interior trim part for a vehicle, the interior trim part having a structural part, the structural part comprising: - a chute channel portion having a substantially tubular shape extending along a chute demolding direction between a first end and a second end, the chute channel portion comprising a first wall, a second wall and two side walls (16, 18) extending between the first wall and the second wall, the chute channel portion has a chute channel internal face, the chute channel internal face delimits an expansion passage intended to guide an expansion of an airbag, - a base portion having a base portion internal face and a base portion external face, the base portion comprises a first base portion, a base protrusion and a second base portion, the base portion internal face of the first base portion is connected to the first end of the chute channel portion, the base protrusion extends between the first base portion and the second base portion, the external surface of the base protrusion protrudes with respect to the external surface of the second base portion and the base portion internal face of the base protrusion defines a recess, and - a reinforcing portion integral with the chute channel portion and the base portion, the reinforcing portion is connected to the base portion internal face, the reinforcing portion defines a plurality of cavities, the interior trim part is characterized in that: - the base portion is integral with the chute channel portion, and - the cavities include first wall cavities extending through the first wall, each of the first wall cavities extends in a protrusion demolding direction between a first wall cavity bottom and a first wall cavity free end, the first wall cavity bottom being at the base portion internal surface, the first wall cavity free end being at the chute channel internal face, the protrusion demolding direction defining a deviation angle (α) with respect to the chute demolding direction, the deviation angle (α) being non null. - a chute channel portion having a substantially tubular shape extending along a chute demolding direction between a first end and a second end, the chute channel portion comprising a first wall, a second wall and two side walls (16, 18) extending between the first wall and the second wall, the chute channel portion has a chute channel internal face, the chute channel internal face delimits an expansion passage intended to guide an expansion of an airbag, - a base portion having a base portion internal face and a base portion external face, the base portion comprises a first base portion, a base protrusion and a second base portion, the base portion internal face of the first base portion is connected to the first end of the chute channel portion, the base protrusion extends between the first base portion and the second base portion, the external surface of the base protrusion protrudes with respect to the external surface of the second base portion and the base portion internal face of the base protrusion defines a recess, and - a reinforcing portion integral with the chute channel portion and the base portion, the reinforcing portion is connected to the base portion internal face, the reinforcing portion defines a plurality of cavities, - the base portion is integral with the chute channel portion, and - the cavities include first wall cavities extending through the first wall, each of the first wall cavities extends in a protrusion demolding direction between a first wall cavity bottom and a first wall cavity free end, the first wall cavity bottom being at the base portion internal surface, the first wall cavity free end being at the chute channel internal face, the protrusion demolding direction defining a deviation angle (α) with respect to the chute demolding direction, the deviation angle (α) being non null.