Ford Oxygen Sensor AE81-9F472-AB Replaces AE81-9F472-CA Plug and Play

This oxygen sensor fits Ford Focus (2005–2011, 1.8L/2.0L), Mondeo (2007–2010, 2.0L/2.3L) and Mazda3 (2006–2012, 2.0L); direct replacement for precise air-fuel ratio monitoring. OEM AE81-9F472-AB, also compatible AE81-9F472-CA; cross-check stock. Replacement difficulty: low; simply use a specialized wrench to remove old sensor and insert new one; no programming or extra fitting required; operate on cold engine to avoid burns. Plug-and-play; improves fuel economy and reduces emissions.