If your 1999-2010 Mustang's check engine light has recently come on and you are feeling a rough engine idle, or beginning to notice poor MPG, you may need to replace your rear oxygen sensor. This Ford Rear Oxygen Sensor is an OEM direct replacement part for your faulty rear driver side Oxygen Sensor (Motorcraft Part Number: DY-1401) for your 1999-2004 Mustang, the rear passenger side Oxygen Sensor for your 2001-2004 Mustang, the front Oxygen Sensor on your 1999-2010 Mustang, and the rear Oxygen Sensor (GU2Z-9G444-A) on your 2005-2010 Mustang.
The oxygen sensor, or O2 sensor, is required to measure the amount of oxygen in the exhaust and deliver the information to your Mustang's computer. The computer then uses this information to adjust air-fuel ratios to keep your engine running smoothly and perform the way it should. A faulty oxygen sensor could prevent your Mustang from passing inspection. This Ford Rear Oxygen Sensor (GU2Z-9G444-A) is a great part to pick up when you are replacing your factory H-pipe with a freer flowing X-pipe or H-pipe.
*Sold individually--two required per Mustang.
*This sensor fits the rear driver side of 1999-2004 Mustangs, the rear passenger side of 2001-2004 Mustangs, the rear of 2005-2010 Mustangs and the front of 1999-2010 Mustangs.
Purchase a new Ford (DY-1401) Rear Oxygen Sensor (GU2Z-9G444-A) for the Rear Driver Side of your 1999, 2000, 2001, 2002, 2003 or 2004 Mustang, the Rear Passenger Side of your 2001, 2002, 2003 or 2004 Mustang, the Rear of your 2005, 2006, 2007, 2008, 2009 or 2010 Mustang or the Front of your 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 or 2010 Mustang from CJ Pony Parts today!