The NSN 4820011223673 (Seat Valve) part number 189953-0087, 281270-0004 MAIN ITEM 16, 281270-0005 ITEM 16 manufactured by Marotta Controls Inc 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 4820011223673 . 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 4820011223673 parts today to get started.