This 5-wire wide-band oxygen sensor fits select 2005-2026 Audi, Dodge, Fiat, Hyundai and other applications 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 350-35031 Oxygen Sensor Features:

• Fits 2005-2012 Audi A4; 2005-2014 Audi A4 Quattro; 2005-2018 Audi A6 Quattro; 2006-2016 Audi A6; 2008-2016 Audi A5; 2008-2010 Audi A5 Quattro; 2009-2017 Audi Q5
• Fits 2010-2016 Audi S4; 2010-2017 Audi S5; 2011-2019 Audi Q7; 2012-2017 Audi A3, Fiat 500; 2012-2018 Audi A7 Quattro; 2014-2017 Audi SQ5; 2015-2018 Audi A8 Quattro
• Also fits select Audi, Dodge, Fiat, Hyundai, Kia, Seat and Volkswagen applications
• Sensor locations by application: B1S1, B2S1 (bank and sensor number)
• Used in both upstream and downstream positions, depending on application
• 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 square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue