Is your Ford Focus 2.0L (2010-2016) throwing a check engine light for an O2 sensor? This JESBEN wideband oxygen sensor might be the fix. It's a direct replacement for part numbers 8F9A-9Y460-GA, 0258017321, and 0258017322. This is a 5-wire LSU 4.9 type upstream sensor that monitors the air-fuel ratio for the engine computer. It fits a bunch of Focus models from those years, including hatchbacks, sedans, estates, and different trim levels like the GX, Hybrid, and Flex versions – but always double-check your specific vehicle before buying. JESBEN is an auto parts supplier with experience in fuel and ignition systems. A failing O2 sensor can cause poor fuel economy, rough running, or failed emissions tests. Replacing it can restore performance and efficiency. The sensor comes with instructions, but installation usually involves locating the old sensor, unplugging it, unscrewing it with a special socket, and screwing in the new one. If you're not comfortable doing it yourself, a mechanic can handle it quickly.