This 5-wire wide-band oxygen sensor fits select 2017-2026 Audi, Porsche and Volkswagen 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. It uses a female square connector.

Walker Products 350-35168 Oxygen Sensor Features:

• Fits 2019-2020 Audi A8 Quattro; 2020-2026 Audi RS Q8, SQ7, SQ8; 2020 Audi S8; 2021-2026 Audi RS6 Avant, RS7 Sportback; 2017-2019 Porsche Panamera
• Fits 2018-2023 Volkswagen Atlas; 2019-2023 Volkswagen Teramont; 2020-2023 Volkswagen Atlas Cross Sport
• Engine coverage includes 3.6L V6, 4.0L V8 applications
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 875 mm (34.4 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue