A throttle body is a crucial component in an internal combustion engine that controls the amount of air entering the engine. It is typically located between the air intake and the intake manifold. When the driver presses the accelerator pedal, the throttle body opens, allowing more air to flow into the engine, which increases power and speed. Throttle bodies can be either mechanical or electronic. Mechanical throttle bodies use a cable connected to the accelerator pedal, while electronic throttle bodies use sensors and motors to control airflow more precisely. This technology helps improve fuel efficiency and reduce emissions in modern vehicles, including those made by automakers.