>> Search results for: 5320949 NSN Search Results National Stock Number (NSN) Description 2990-01-707-9723, 2990017079723 HEATER,AIR DUCT,ENGINE 1660-01-716-3379 , 1660017163379 HEATER,AIRCRAFT 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