National Stock Number
2540-12-198-9883
National Stock Number (NSN) 2540-12-198-9883, or NIIN 121989883, (diffuser,air,vehicular heating and ventilating) has an unknown assigned date. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 45266. [A DEVICE FOR INSTALLATION IN VEHICLES USED IN VARYING DESIGNS TO EFFECT THE PROPER DISTRIBUTION OF VENTILATED OR HEATED AIR TO ASSURE TEMPERATURE EQUALIZATION, OR FOR THE DEFROSTING AND DE-ICING OF VEHICULAR GLASS SURFACES.].
This information was last updated on Dec 26, 2025.