Housing for the air bag in a motor vehicle

A housing for an inflatable air bag in a motor vehicle with a diffusor section capable of receiving a gas generator, a shot channel section receiving the airbag, and fastening brackets. A plurality of reinforcing ribs have a shape and are positioned on the shot channel section for counteracting expansion of the shot channel section at an outer contour. The diffusor section, the shot channel section, the fastening section and the plurality of reinforcing ribs are formed in one piece and with a plurality of walls. An edge of the shot channel section is multiwalled and all the parts of the housing are homogeneously connected to each other.