The oxygen sensor installs in the downstream position on select 2008-2017 Seat and Volkswagen applications. It signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-34824 Oxygen Sensor Features:

• Fits 2008-2009 Seat Cordoba; 2009-2017 Seat Ibiza; 2010 Seat Nuevo Ibiza; 2011 Seat Exeo; 2013-2015 Seat Toledo; 2015-2017 Volkswagen Polo
• Engine coverage includes 1.2L I4, 1.4L I4, 1.6L I4, 1.8L I4, 2.0L I4 applications
• Sensor location by application: B1S2 (bank and sensor number)
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 250 mm (9.8 in.) overall length
• Female oblong connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue