>> Search results for: D7978 NSN Search Results National Stock Number (NSN) Description 4820-99-532-8574, 4820995328574 SEAT,VALVE 8120-99-820-3275 , 8120998203275 VALVE,CYLINDER 5340-99-075-8198, 5340990758198 SEAT 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