Kilinc opened the scoring for Galatasaray in the fourth minute before Turan doubled the lead in the 12th minute after he was set up by Ryan Donk.
Soner Aydogdu reduced the deficit for Goztepe before Feghouli sealed the victory after benefitting from Taylan Antalyali’s assist.
Besides his goal, Feghouli has also provided three assists in 14 appearances across all competitions for Galatasaray.
The forward featured for 83 minutes before he was replaced by Omer Bayram, while Belhanda made way for Bartug Elmaz in the 90th minute.
Senegal international Mbaye Diagne played for 67 minutes before he was brought out for Ogulcan Caglayan while Nigeria midfielder Oghenekaro Etebo was not listed for the encounter.