日产骐达英菲尼迪氧传感器22693-1LU0A / 211500-7530，前氧替换，恢复发动机最佳状态。

When your Nissan Tiida or Infiniti shows idle instability, significantly higher fuel consumption, weak acceleration, or check engine light, the front oxygen sensor aging is likely. It monitors exhaust oxygen content in real time and feeds back to the ECU to adjust fuel injection for efficient combustion and emission compliance. This product with OEM number 22693-1LU0A (compatible with 211500-7530) fits Tiida, Infiniti and other models as an oxygen sensor replacement. Installation must use a dedicated socket to avoid damaging sensor threads; ensure connector is firmly plugged in; after installation, clear fault codes and road-test to verify.