>> Search results for: A1289B NSN Search Results National Stock Number (NSN) Description 4220-00-078-1384, 4220000781384 COVER,VALVE 4220-01-348-0727 , 4220013480727 COVER AND SPRING,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