The air/fuel ratio sensor installs in the upstream position on 2014-2018 Nissan Rogue, 2016-2023 Nissan NP300, 2018-2020 Nissan NP300 Frontier and 2018-2023 Nissan X-Trail with the 2.5L I4 engine. It reports the exhaust air-fuel ratio 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 250-54120 Air/Fuel Ratio Sensor Features:

• Fits 2014-2018 Nissan Rogue; 2016-2023 Nissan NP300; 2018-2020 Nissan NP300 Frontier; 2018-2023 Nissan X-Trail with the 2.5L I4 engine
• Sensor location by application: B1S1 (bank and sensor number)
• 4-wire wide-band air/fuel ratio sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 300 mm (11.8 in.) overall length
• Female rectangle connector at the harness end with 4 pin terminals
• Platinum electrode layer with a protective coating against combustion residue