The G-159 was given the name Gulfstream and on 14 August 1958 the first aircraft, registered N701G, took off from Bethpage, New York on its maiden flight.
G-159 diberi nama Gulfstream dan pada 14 Agustus 1958 pesawat pertama, N701G terdaftar, lepas landas dari Bethpage, New York pada penerbangan perdananya.