Nissan X-Trail Oxygen Sensor 226A0-4CL0B High-Efficiency Emission Monitoring Original Factory Quality

Oxygen sensor directly replaces Nissan original part number 226A0-4CL0B; universally compatible and fits snugly. Core function is real-time monitoring of exhaust oxygen content and feedback to ECU to adjust air-fuel ratio for engine efficiency. Compatible with Nissan X-Trail, especially 2014–2020 2.0L and 2.5L models. After installation, can resolve high fuel consumption, weak acceleration, and engine warning light; helps pass annual emissions. If you notice rough idling, exhaust smoke, or sudden fuel consumption rise, it’s likely an aging oxygen sensor that should be replaced.