What age is Yamaha outboard model number AET?

The Yamaha AET outboard model is part of the Yamaha 2-stroke outboard engine lineup, which was produced in the late 1980s and early 1990s. Specifically, the AET model was introduced in 1987 and remained in production until the early 1990s. Therefore, the AET model is approximately 30 to 36 years old, depending on the specific year of production.