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The TOPRAN 821 984 crankshaft position sensor is a critical component for your engine's management system. It precisely detects the rotational speed and position of the crankshaft, providing essential data to the engine control unit (ECU). Accurate readings from this sensor are vital for proper ignition timing, fuel injection, and overall engine performance. A malfunctioning sensor can lead to issues such as rough idling, stalling, poor fuel economy, and the illumination of the check engine light. Crafted with quality materials, this TOPRAN sensor is built for durability and reliable performance. It is designed to meet or exceed original equipment specifications, ensuring a proper fit and function for your vehicle.