>> Search results for: 1649AITEM2 NSN Search Results National Stock Number (NSN) Description 4820-99-021-4704, 4820990214704 SEAT,VALVE 4820-99-338-7778 , 4820993387778 SEAT,VALVE 4820-99-849-9565, 4820998499565 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