The TOPRAN 504 664 Crankshaft Position Sensor is a critical component for modern engine management systems. It precisely detects the rotational speed and position of the crankshaft, providing vital data to the engine control unit (ECU). This data is used to synchronize fuel injection and ignition timing, ensuring the engine runs smoothly and efficiently. A malfunctioning sensor can lead to various drivability issues, including rough idling, stalling, poor acceleration, and even prevent the engine from starting. Crafted with quality materials, this sensor is designed to meet or exceed original equipment specifications, offering reliable performance and durability. Replacing a faulty crankshaft position sensor with this TOPRAN part can restore proper engine function and prevent further damage.