The oxygen sensor installs in the upstream position on select 2012-2022 Audi, Porsche and Volkswagen applications. It measures the exhaust air-fuel ratio across a broad range so the engine computer can meter fuel precisely. It uses a male/female oblong connector with 5 terminals.

Walker Products 250-25118 Oxygen Sensor Features:

• Fits 2012-2014 Audi A8 Quattro; 2017-2018 Porsche 718 Boxster, Cayman; 2014-2019 Volkswagen Beetle; 2015 Volkswagen Jetta; 2018-2022 Volkswagen Passat
• Engine coverage includes 2.0L H4, 2.0L I4, 2.5L H4, 6.3L W12 applications
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 650 mm (25.6 in.) overall length
• Male/female oblong connector at the harness end with 5 spade terminals
• Platinum electrode layer with a protective coating against combustion residue