This HELLA Camshaft Position Sensor, part number 6PU 009 121-331, is designed to provide precise readings of the camshaft's rotational position. This information is critical for the engine control unit (ECU) to manage ignition timing and fuel injection, leading to smoother engine operation and improved fuel economy. Crafted with high-quality materials, this sensor offers reliable and durable performance. It is engineered to meet or exceed original equipment specifications, ensuring a seamless installation and dependable functionality. Replacing a faulty camshaft position sensor can resolve issues such as rough idling, poor acceleration, and engine misfires.