National Stock Number
2990-01-251-0657
National Stock Number (NSN) 2990-01-251-0657, or NIIN 012510657, (breather filter,emission control) was assigned March 11, 1987 in the Federal Logistics Information System (FLIS). NIIN 012510657 was cancelled on April 2, 2003, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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, there are no suppliers 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) 36484. [A NON-METALLIC DEVICE DESIGNED TO FILTER AIR FLOW FROM THE CRANKCASE THROUGH THE POSITIVE CRANKCASE VENTILATION (PCV) VALVE INTO THE AIR CLEANER. EXCLUDES FILTER ELEMENT, FLUID.]. 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 2990012510657 does not contain precious metals.
This information was last updated on Aug 01, 2025.