Cessna 336/337 Fiberglass Vertical Fin Tip Upper . Replaces: Cessna Part # 1531003-9/-10. Cessna 337 s/n 33701463 & up, F337 s/n F33700056 thru F33700086, T337 & P337H s/n P3370001 thru P3370320, P337H s/n P3370321 & up .