The 4-wire narrow-band oxygen sensor is a replacement sensor for 2013-2016 Ford Escape, 2014-2019 Ford Fiesta, 2014-2016 Ford Transit Connect and 2014 Volkswagen Combi. It 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 350-34569 Oxygen Sensor Features:

• Fits 2013-2016 Ford Escape; 2014-2019 Ford Fiesta; 2014-2016 Ford Transit Connect; 2014 Volkswagen Combi
• Engine coverage includes 1.4L I4, 1.6L I4 applications
• Sensor location by application: B1S2 (bank and sensor number)
• Used in both upstream and downstream positions, depending on application
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 750 mm (29.5 in.) overall length
• Male circle connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue