>> Search results for: 3R40639 NSN Search Results National Stock Number (NSN) Description 4310-00-459-0781, 4310004590781 PARTS KIT,PISTON ASSEMBLY,COMPRE 2090-99-500-6090 , 2090995006090 ROD 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