National Stock Number
2805-01-643-1159
National Stock Number (NSN) 2805-01-643-1159, or NIIN 016431159, (cylinder head,gasoline engine) was assigned March 20, 2015 in the Federal Logistics Information System (FLIS). NIIN 016431159 was cancelled on November 2, 2017, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 2805016647446. 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 one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 30, 2020, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not 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) 60371. [AN ITEM DESIGNED TO INCLOSE THE CYLINDER BORE(S) OF AN ENGINE BLOCK TO FORM A COMBUSTION CHAMBER(S). IT MAY HAVE LIQUID COOLING PASSAGE(S) AND/OR AIR COOLING FIN(S) AND MAY INCLUDE VALVE(S), VALVE GUIDE(S), ROCKER ARM(S), AND THE LIKE. IT IS A COMPONENT PART OF AN ENGINE, GASOLINE. SEE ALSO CYLINDER HEAD, DIESEL 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 2805016431159 does not contain precious metals.
This information was last updated on Jun 01, 2025.