The VALEO 366155 crankshaft position sensor is a critical component for your vehicle's engine management system. It accurately detects the rotational speed and position of the crankshaft, sending this vital information to the engine control unit (ECU). This data is essential for precise fuel injection timing and ignition control, directly impacting engine performance, fuel efficiency, and emissions. A failing sensor can lead to rough idling, stalling, poor acceleration, and the illumination of the check engine light. Engineered by VALEO, a trusted name in automotive components, this sensor is built to meet stringent quality standards. It offers a direct fit for seamless installation and is designed to withstand the demanding conditions within the engine bay, ensuring reliable and consistent performance throughout its service life.