Please confirm your old part number matches up with one of the part numbers above 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 Ford Fiesta V MK V 1.25 16V (2001-2010) Hatchback 1242 70 51 For Ford Focus MK II 1.4 (2004-2016) Hatchback 1388 80 59 For Ford Focus MK II 1.6 (2004-2016) Saloon 1596 100 74