In 1986, Formula 3000 was introduced into Japan. Mugen joined with Honda to build an F3000 engine. It was introduced in the 1987 season and leased to 14 teams. In 1988, Mugen won four of the top five places in the Japanese F3000 championship. In 1989, Mugen entered European F3000 with the MF308 engine. They won the championship with Jean Alesi driving a Reynard. The same year the company produced its own prototype 3.5 L V8 Formula One engine, codenamed MF350.