QIJIAUTO Downstream O2 Sensor for Nissan Pathfinder/Altima/Quest/370Z/Murano & Infiniti (OE 226A01KC0A)

Enhance your exhaust sensor system with the QIJIAUTO downstream O2 sensor

This downstream oxygen sensor is designed to monitor exhaust gas composition after the catalytic converter and feed data to your engine control unit. While results can vary by vehicle and driving style, drivers often notice smoother operation, steadier idle, and potential improvements in throttle response as the system interprets exhaust signals with greater clarity.

Built to align with OEM standards, the sensor carries OE numbers 226A01KC0A and 234-9124 for reliable fitment. A durable protective layer guards the sensor during handling and installation, and a silver alloy joint supports a secure connection. The heated 4‑wire design helps the sensor stabilize readings quickly after cold starts, supporting consistent performance across a broad range of temperatures.

Key benefits at a glance

• OEM-aligned fit: precision-engineered to match OE numbers for easy, confident installation.
• Durable construction: protective coating extends sensor longevity during service and use.
• Secure connections: silver alloy joint simplifies installation and reduces mounting issues.
• Heated performance: 4-wire design improves fast sensor response in cold conditions.
• Drive-ready potential: smoother acceleration and steadier engine behavior may follow regular use.

The part supports Nissan and INFINITI models including Pathfinder (2013-2015), Altima (2013-2018), Quest (2012-2015), 370Z (2014-2020), Murano, and INFINITI JX35/Q40/Q50/Q70/QX50, with Bank 1 and Bank 2 sensors available. Before purchasing, verify the part number and engine configuration match your vehicle (for example, O2 sensor bank 1 sensor 2). If you’re unsure, our team can help confirm fitment.

Real-world usage and care tips

• Threaded mount and female connector support a straightforward installation with reduced risk of cross-threading.
• Handle the sensor gently to protect the protective layer and electrical connectors.
• After installation, perform a quick system check to ensure stable sensor readings and wiring integrity.

In everyday driving, this sensor is a practical upgrade for vehicles that rely on precise exhaust monitoring. While not a guaranteed fix for every diagnostic code, accurate downstream sensor data can help the ECU respond more effectively to engine conditions, potentially contributing to smoother operation and more consistent performance over time.