National Stock Number
2990-01-202-4128
National Stock Number (NSN) 2990-01-202-4128, or NIIN 012024128, (heater,air duct,engine) was assigned March 2, 1985 in the Federal Logistics Information System (FLIS). NIIN 012024128 was cancelled on August 24, 2011, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. 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) 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 critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2990012024128 does not contain precious metals.
This information was last updated on Jul 01, 2025.