The NSN 4820012161540 (Poppet Valve) part number S1D10025 ITEM 4, S1D10048 ITEM 4, S2D10453-4MF manufactured by Vacco Industries is available in Jet Parts 360’s inventory. Owned and operated by ASAP Semiconductor, Jet Parts 360 has over six billion parts in its inventory, including NSN 4820012161540 . ASAP is devoted to streamlining the parts procurement process for our customers, making it easy for them to search through billions of parts to find exactly what they are looking for. We have dedicated account managers ready to solve procurement issues our clients face, whether it’s a need for aerospace parts, or an aircraft on ground situation. Submit a Quote for NSN 4820012161540 parts today to get started.