Genuine OEM Audi Mechatronic Unit, part number 02E325025ALZ7Y. This mechatronic unit is an integral part of the transmission system, responsible for controlling gear selection and clutch operation. It houses the electronic control module and hydraulic actuators. Genuine OEM mechatronic units are essential for ensuring the correct firmware, precise hydraulic control, and optimal transmission performance, guaranteeing smooth gear changes and reliability.