>> Search results for: PFP8436 NSN Search Results National Stock Number (NSN) Description 4210-99-977-4212, 4210999774212 INLET VALVE SEAT IN 4210-99-977-4211 , 4210999774211 EXHAUST VALVE 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