The Genuine BMW Rain Sensor - 61359254026 is a sensor designed specifically for BMW vehicles to detect and measure the amount of rain on the windshield. It uses advanced technology to automatically adjust the speed of the windshield wipers based on the intensity of the rain. This ensures optimal visibility for the driver and improves overall safety while driving in wet conditions. The rain sensor is a genuine BMW product, meaning it is made with high-quality materials and meets the strict standards set by the manufacturer. It is a reliable and essential component for any BMW vehicle.