This 4-wire narrow-band oxygen sensor fits select 2016-2025 Polestar and Volvo applications 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 350-34662 Oxygen Sensor Features:

• Fits 2020-2021 Polestar Polestar 1; 2016-2025 Volvo XC90; 2017-2025 Volvo S90; 2017-2021 Volvo V90 Cross Country; 2018-2021 Volvo V90; 2018-2025 Volvo XC60
• Fits 2022-2025 Volvo S60, V60 with the 2.0L I4 engine
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 425 mm (16.7 in.) overall length
• Female oblong connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue