This 5-wire wide-band oxygen sensor fits select 2016-2026 BMW and JAC applications in the upstream position and measures the exhaust air-fuel ratio across a broad range so the engine computer can meter fuel precisely. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-35142 Oxygen Sensor Features:

• Fits 2016-2018 BMW 330e; 2016-2019 BMW 330i; 2016-2020 BMW 420i, 420i Gran Coupe
• Fits 2017-2020 BMW 120i, 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe, 530i, 530i xDrive; 2017-2021 BMW 230i, 230i xDrive
• Also fits select BMW and JAC applications
• Sensor location by application: B1S1 (bank and sensor number)
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 575 mm (22.6 in.) overall length
• Female oblong connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue