National Stock Number
2990-01-503-3691
National Stock Number (NSN) 2990-01-503-3691, or NIIN 015033691, (damper,exhaust pipe,diesel engin) was assigned December 13, 2002 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 2 suppliers. 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) 37121. [A MECHANICAL DEVICE CONSISTING OF A VALVE OR A THROTTLE PLATE INSTALLED IN THE EXHHAUST MANIFOLD OF AN ENGINE AND DESIGNED TO BOOST THE ENGINE BRAKING ACTION BY ADJUSTMENT OF THE EXHAUST PIPE CROSS-S ECTION. MOUNTING ELEMENTS MAY BE INCLUDED.]. 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 2990015033691 does not contain precious metals.
This information was last updated on Jul 01, 2025.