Abstract: A air bag module comprises an inflater, a unitary polymeric housing, and an air bag retainer of the same or similar material. The housing has integral walls forming an inflater chamber which include an inflater mounting stud aperture, a plurality of integral supports for the inflater, an integral peripheral rim forming an airbag chamber, and an integral upper wall having inflater gas diffuser apertures. An inflater stud fastener secures the inflater to the housing. The retainer and housing have integral cooperating fasteners for securing the retainer to the housing. A polymeric cover closes the retainer and confines the attached air bag. The housing and retainer are formed of the same recyclable material such that the air bag assembly can be recycled by simply removing only the stud fastener and the inflater. Several embodiments of the housing, retainer and fasteners are disclosed. In one embodiment, an inflater gas diffuser that is integral with the housing.