Throttle bodies regulate the amount of air entering the engine’s intake manifold, directly impacting power output and engine RPM. Positioned between the air filter and intake manifold on internal combustion engines, they utilize a throttle plate controlled by the accelerator pedal – either mechanically via a cable or electronically via a motor. Modern throttle bodies frequently incorporate a mass airflow (MAF) sensor for precise air measurement and electronic throttle control (ETC) systems for drive-by-wire functionality. Construction typically includes a precision-bored aluminum alloy housing and a durable throttle plate, often with a Teflon coating to reduce friction. Calibration and proper sensor integration are critical for optimal engine performance and emissions control.