Order Ford Focus O2 Sensors. Get Ford Focus O2 Sensor Socket & Spacer. Check Ford Focus Oxygen Sensor Replacement Cost. Use Ford Focus Sensor Cleaner. Maintaining your Ford Focus's O2 sensors is crucial for performance and fuel efficiency. Regularly check for signs of wear such as rough idling, decreased fuel economy, or a check engine light, indicating potential sensor failure. Extend sensor life by using fuels without additives and ensuring your engine runs correctly to prevent premature sensor degradation. When choosing a replacement, opt for high-quality titanium or zirconia sensors known for their durability and precision. Installation is straightforward, but ensure compatibility with your Focus model for seamless integration and optimal engine function. Shop with us for reliable O2 sensors designed to keep your Ford Focus running smoothly.