Shipping Notice:for our UK location listing,our shipping time to UK mainland is 2-4 business days,no worry about the estimated delivery time, it is wrong because some technical error Please Double Check The OE Number Befere Buying. About Throttle Body The throttle body is a valve that controls how much air the engine takes in. It is connected to the air filter on the top and the engine block on the bottom, which is called the throat of the car engine. There are two types of throttle valves, traditional cable type and electronic throttle. The traditional engine throttle control mechanism works through a cable (soft wire) or a tie rod, one side is connected to the accelerator pedal, and the other side is connected to the throttle linkage plate. According to the energy required by the engine,the electronic throttle mainly uses the throttle position sensor to control the opening angle of the throttle so that it can adjust the amount of intake air. Application: For AUDI For AUDI A3 (8P1)