This 4-wire narrow-band oxygen sensor fits 2007-2013 Mitsubishi Outlander, 2008-2014 Mitsubishi Lancer and 2011-2012 Mitsubishi Outlander Sport in the downstream position and signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-34034 Oxygen Sensor Features:

• Fits 2007-2013 Mitsubishi Outlander; 2008-2014 Mitsubishi Lancer; 2011-2012 Mitsubishi Outlander Sport
• Engine coverage includes 2.0L I4, 2.4L I4, 3.0L V6 applications
• Sensor location by application: B1S3 (bank and sensor number)
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 925 mm (36.4 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue