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The VALEO 366503 crankshaft position sensor is a critical component for modern engine management systems. It precisely detects the rotational speed and position of the crankshaft, sending this vital information to the engine control unit (ECU). Accurate data from the crankshaft position sensor is essential for the ECU to properly time fuel injection and ignition spark. This ensures smooth engine operation, prevents stalling, and contributes to optimal fuel economy. A failing sensor can lead to various drivability issues, including rough idling, misfires, and difficulty starting. VALEO is a trusted brand in the automotive industry, known for producing high-quality replacement parts. This sensor is manufactured to meet or exceed original equipment specifications, providing a reliable and durable solution for your vehicle's needs. Installation should be performed by a qualified technician to ensure proper function.