The DELPHI SS11478 Crankshaft Position Sensor is a critical component for modern engine management systems. It accurately detects the rotational speed and position of the crankshaft, transmitting this vital data to the engine control unit (ECU). This precise information allows the ECU to precisely control ignition timing and fuel injection, which is fundamental for smooth engine operation, optimal power delivery, and fuel economy. A malfunctioning sensor can lead to a variety of issues, including engine misfires, rough idling, stalling, and failure to start. Crafted with high-quality materials and engineered to meet stringent OEM specifications, the DELPHI SS11478 offers reliable and durable performance. Its direct-fit design ensures straightforward installation, making it a dependable choice for replacing a faulty sensor and restoring your vehicle's engine performance.