Q50 Upstream Oxygen Sensor (02 Sensor) | OEM Replacement VQ37VHR

Ensure your vehicle’s emissions system is working at peak efficiency with these high-quality OEM replacement Upstream O2 sensors for the Q50/Q60. These sensors monitor the oxygen levels in the exhaust gases after they pass through the catalytic converter, helping the ECU adjust the air-fuel mixture for optimal engine performance and reduced emissions. If you’re experiencing a check engine light, poor fuel economy, or trouble codes like P0420 (Catalyst Efficiency Below Threshold), replacing these sensors will restore your vehicle’s performance and emissions control.

Features:

• OEM Quality: Designed to directly replace your original Upstream O2 sensors for reliable performance.

• Improved Efficiency: Monitors exhaust gases post-catalytic converter to help the ECU optimize fuel efficiency and reduce emissions.

• Durable Construction: Built to withstand the heat and harsh conditions of the exhaust system.

• Fix Common Issues: Resolves problems such as engine hesitation, poor acceleration, or failed emissions tests caused by faulty sensors.

• Easy Installation: Direct fit for a hassle-free replacement.

Specifications:

• Sensor Location: Upstream (Pre-Catalytic Converter)

Compatibility:

• Fits: Infiniti Q50 2014-2015 VQ37VHR

What do Upstream O2 sensors do?

Upstream O2 sensors, also known as pre-catalytic converter oxygen sensors, monitor the level of oxygen in the exhaust gases before they enter the catalytic converter. Their primary function is to provide real-time data to the engine control unit (ECU) about the engine’s air-fuel ratio. This information is crucial for the ECU to make precise adjustments to fuel delivery and ignition timing, ensuring optimal combustion, performance, and fuel efficiency. If the upstream O2 sensors detect an imbalance in the air-fuel mixture, they can trigger a check engine light and set specific trouble codes. Replacing faulty upstream O2 sensors helps maintain proper engine function, improves fuel economy, and reduces harmful emissions.