Find BMW Oxygen Sensor Location. Locate BMW Sensor Cleaner. Purchase BMW O2 Sensors & BMW O2 Sensor Socket. Browse BMW O2 Sensor Spacer. Maintaining the O2 sensors in your BMW is crucial for optimal performance and fuel efficiency. Ensuring that these sensors are free of contaminants can extend their lifespan; look for signs such as rough idling or a check engine light as indicators that a replacement might be necessary. When selecting a new O2 sensor, it's essential to choose one that matches your BMW's specifications—options include titania and zirconia sensors, each with distinct response times and longevity. The O2 sensor plays a vital role in regulating your vehicle's air-fuel mix, so opting for high-quality materials and following manufacturer guidelines for installation is imperative. Keep your BMW's emissions in check and enhance your driving experience with the right O2 sensor.