>> Search results for: A74490 NSN Search Results National Stock Number (NSN) Description 5342-01-274-8273, 5342012748273 BRACKET,ENGINE ACCESSORY 4820-01-191-8943 , 4820011918943 GUIDE,VALVE STEM 4820-01-074-4926, 4820010744926 GUIDE,VALVE STEM 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