The oxygen sensor installs on select 2013-2021 Ford and Lincoln applications. 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 350-34410 Oxygen Sensor Features:

• Fits 2013-2018 Ford C-Max; 2013-2016 Ford Escape, Ranger; 2013-2020 Ford Fusion, Lincoln MKZ; 2014-2015 Ford Transit Connect; 2016-2021 Ford Figo
• Fits 2019-2020 Ford Police Responder, SSV Plug-In Hybrid
• Engine coverage includes 1.5L I4, 1.5L I3, 2.0L I4, 2.5L 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, 700 mm (27.6 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue