The oxygen sensor installs in the downstream position on 2022-2023 Audi A3, 2016-2020 Ford Transit Connect, 2017-2018 Ford Escape, 2017-2020 Ford Ranger and 2022-2024 Volkswagen Jetta. 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 350-34997 Oxygen Sensor Features:

• Fits 2022-2023 Audi A3; 2016-2020 Ford Transit Connect; 2017-2018 Ford Escape; 2017-2020 Ford Ranger; 2022-2024 Volkswagen Jetta
• Engine coverage includes 1.4L I4, 2.5L I4 applications
• Sensor location by application: B1S2 (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, 800 mm (31.5 in.) overall length
• Female circle connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue