The 4-wire narrow-band oxygen sensor is a replacement sensor for select 2015-2022 Polestar and Volvo 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 350-341032 Oxygen Sensor Features:

• Fits 2020-2021 Polestar Polestar 1; 2015-2022 Volvo S60, XC60; 2015-2016 Volvo S80, XC70; 2015-2018 Volvo V60; 2016-2017 Volvo XC90; 2020-2022 Volvo S90 with the 2.0L I4 engine
• 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, 550 mm (21.7 in.) overall length
• Female oblong connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue