Genuine OEM Audi Turbocharger Vacuum Actuator, part number 079145461K. This critical component is responsible for controlling the vacuum supply to the turbocharger, thereby regulating boost pressure for optimal engine performance. It is specifically designed for installation on the left side of the engine assembly. Constructed from durable plastic and metal, it weighs approximately 0.33 kg and has a length of 0.295 meters. Using a genuine OEM vacuum actuator ensures precise calibration, consistent boost control, and long-term reliability, which are essential for maintaining engine efficiency and preventing turbocharger damage.