>> Search results for: 1647ITEM4 NSN Search Results National Stock Number (NSN) Description 4820-99-761-5519, 4820997615519 SEAT,VALVE 4820-99-767-3672 , 4820997673672 SEAT,VALVE 4820-99-781-4678, 4820997814678 SEAT,VALVE 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information