Genuine OEM Audi Turbocharger Speed Sensor, part number 06Q906341. This critical sensor is responsible for precisely monitoring the rotational speed of the turbocharger, providing essential data to the engine control unit for optimal performance and protection. It is typically installed in close proximity to the turbocharger. Weighing 18 grams and measuring approximately 6.5 cm in length, this sensor features a robust housing and a metallic probe. Opting for a genuine OEM sensor guarantees accurate calibration, signal characteristics, and durability, which are crucial for reliable engine management and preventing turbocharger damage.