Genuine OEM Volkswagen Throttle Body, part number 057128063H. This critical engine component precisely regulates the amount of air entering the engine's intake manifold, which is essential for controlling engine speed and power output. It is typically located between the air filter assembly and the intake manifold. Featuring an electronically controlled butterfly valve within a metal housing, this throttle body weighs 0.61 kg. Opting for a genuine OEM throttle body ensures accurate air flow measurement, precise throttle response, and seamless integration with the engine's electronic control unit, which is vital for maintaining engine performance and fuel efficiency.