The oxygen sensor installs in the downstream position on select 2012-2021 Chevy, Infiniti and Nissan 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 250-241108 Oxygen Sensor Features:

• Fits 2015-2018 Chevy City Express; 2013 Infiniti JX35; 2014 Infiniti QX60; 2012-2014 Nissan Murano; 2012-2015 Nissan Quest; 2013-2014 Nissan Altima
• Fits 2013-2021 Nissan NV200; 2013-2015 Nissan Pathfinder
• Engine coverage includes 2.0L I4, 3.5L V6 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, 475 mm (18.7 in.) overall length
• Female rectangle connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue