Tusaş Engine Industries (TEI) (Turkish: TUSAŞ Motor Sanayii A.Ş.), is a center for the manufacture of critical parts for commercial and militray aircraft and marine engines in Eskişehir, Turkey. TEI was founded in 1985 as a joint venture between GE Aviation and Turkish Aerospace Industries (TAI), the Turkish Armed Forces Foundation, and the Turkish Aeronautical Association. The company started with component manufacturing for the General Electric F110 engine powering the F-16, and is planning other jet engine parts related to the Boeing 787 Dreamliner and Airbus A380, among other airplanes such as the TRJ-328.
Some of the projects undertaken by TEI include: