National Stock Number (NSN) 2990-01-457-7405, or NIIN 014577405, (heater,air duct,engine) was assigned August 1, 1998 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 6 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 5 suppliers are deemed design controlled or valid supply parts.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 47 contracts issued for this part number, with 72 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7LX25FAHHQ, SPE7LX25FAGFR, SPE7LX25FAHE5, SPE7LX25FABA8, SPE7LX25FAK12. The total value of the awarded contracts has been US$ 25,674.04.
This NSN is fairly common among different weapons systems, belonging to 11 different platforms.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has low volatility, with an estimated forecasted value of US$ 6,666. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 17491. [A HEATER DESIGNED TO BURN FUEL WHICH APPLIES HEAT THROUGH DUCTS TO ENGINE SURFACES, BATTERY AND THE LIKE TO FACILITATE STARTING IN LOW TEMPERATURES. IT IS NOT CONNECTED TO THE ENGINE COOLANT SYSTEM; MUST HAVE MOUNTING FACILITIES AND BE EQUIPPED WITH A BLOWER(S) (FAN). SEE ALSO HEATER, AIR DUCT-COOLANT, 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 2990014577405 does not contain precious metals.
This NSN is associated to Schedule B 8412909080: parts of engines and motors, nesoi. The Schedule B End Use is listed as industrial engines. NAICS classification category 333111: farm machinery and equipment manufacturing.
This information was last updated on Aug 01, 2025.