BMW 7 Series Crankshaft Position Sensor 6PU009110421 Stable Reliable Durable

For BMW 7 Series models with N62/N63 engines (E65/E66/F01/F02), if there is starting difficulty or weak acceleration, crankshaft position sensor failure is common. This sensor has OEM number 6PU009110-421 and is located near the crankshaft flywheel, monitoring RPM and position to transmit timing signals to the ECU for precise ignition timing and fuel timing. Installation difficulty is moderate; labor about 1.5–2 hours; ensure proper clearance calibration between the sensor and flywheel ring gear, or the engine may fail to start.