The oxygen sensor installs in the upstream position on select 2018-2026 Alfa Romeo, Audi, Fiat, Jeep and other applications. It 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 350-35129 Oxygen Sensor Features:

• Fits 2020-2023 Alfa Romeo Giulia, Stelvio; 2019-2020 Audi A3 Quattro, S3; 2019-2025 Audi Q3; 2019-2023 Audi TT, TTS Quattro, Fiat 500X, Jeep Renegade; 2023 Audi A1
• Fits 2019 Seat Leon; 2018-2019 Volkswagen Golf R; 2019-2021 Volkswagen Arteon, Golf; 2019-2026 Volkswagen Jetta; 2020-2021 Volkswagen GTI
• Engine coverage includes 1.3L I4, 2.0L I4, 2.9L V6 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, 700 mm (27.6 in.) overall length
• 725 mm (28.5 in.) wiring harness
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue