National Stock Number
2990-01-662-3970
National Stock Number (NSN) 2990-01-662-3970, or NIIN 016623970, (heater,air duct-coolant,engine) was assigned April 5, 2017 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 17492. [A HEATER DESIGNED TO BURN FUEL WHICH APPLIES HEAT BY MEANS OF AIR DUCTS AND A DIRECT CONNECTION TO THE ENGINE COOLANT SYSTEM TO FACILITATE STARTING IN LOW TEMPERATURES; MAY ALSO SUPPLY HEAT TO ENGINE SURFACES, BATTERY, AND THE LIKE; MUST HAVE MOUNTING FACILITIES AND BE EQUIPPED WITH A BLOWER(S) (FAN). SEE ALSO HEATER, AIR DUCT, ENGINE AND HEATER, COOLANT, ENGINE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2990016623970 does not contain precious metals.
This information was last updated on Jul 01, 2025.