This 5-wire wide-band oxygen sensor fits 2011-2013 Infiniti M56, QX56, 2014-2015 Infiniti Q70, QX80 and 2015 Infiniti Q70L with the 5.6L V8 engine 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.

Walker Products 350-35084 Oxygen Sensor Features:

• Fits 2011-2013 Infiniti M56, QX56; 2014-2015 Infiniti Q70, QX80; 2015 Infiniti Q70L with the 5.6L V8 engine
• 5-wire wide-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
• Male square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue