>> Search results for: 557279 NSN Search Results National Stock Number (NSN) Description 4320-01-534-3139, 4320015343139 DIAPRAMPUMP 5330-01-231-4381 , 5330012314381 GASKET 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