Elta Systems will develop an active electronically scanned array (AESA) radar for South Korea's KF-X fighter, under a contract signed with the state-run Agency for Defense Development.
South Korean sources value the agreement at over $35 million, with the Israel Aerospace Industries subsidiary to co-operate with a local partner in the country.
Seoul launched its KF-X programme in 2015, and plans to manufacture more than 120 fighters to replace its ageing McDonnell Douglas F-4s and Northrop F-5s.
The award marks a further international success for Elta, which last year began negotiations linked to the provision of an ELM-2052 AESA radar for a Mk2 version of India's Aeronautical Development Agency Tejas light combat aircraft. It already supplies its ELM-2032 radar for an earlier model of the Hindustan Aeronautics-built fighter.