The MEAT & DORIA 87621 Crankshaft Position Sensor is engineered to provide precise data to your vehicle's engine control unit (ECU). This sensor plays a critical role in determining the rotational speed and position of the crankshaft, which is essential for optimal ignition timing and fuel injection. By accurately monitoring the crankshaft's movement, this sensor allows the ECU to precisely calculate when to fire the spark plugs and inject fuel. This leads to smoother engine operation, improved fuel efficiency, and reduced emissions. A malfunctioning crankshaft position sensor can result in various drivability issues, including rough idling, stalling, and difficulty starting. MEAT & DORIA is known for producing reliable automotive components. This 87621 sensor is designed to meet or exceed original equipment specifications, ensuring a proper fit and dependable performance. Replacing a faulty sensor with this unit can restore your engine's performance and prevent further damage.