>> Search results for: A51E2013931 NSN Search Results National Stock Number (NSN) Description 1660-01-212-2428, 1660012122428 Cancelled -> Replaced by 1560005313478 1560-00-531-3478 , 1560005313478 DUCT ASSEMBLY,AIR CONDITIONING-HEATING,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