Suzuki Liana/Suzuki New Alto Front Oxygen Sensor 234000-9121/18213-62L00

When your vehicle shows idle instability, significantly increased fuel consumption, check engine light on, or exhaust smells worsen, the upstream oxygen sensor has aged and cannot accurately monitor the air-fuel ratio. This sensor, in normal operation, monitors exhaust oxygen content in real time and sends feedback to the ECU to precisely control fuel injection, ensuring efficient combustion and reduced emissions. OEM numbers 234000-9121/18213-62L00 fit Suzuki Liana and new Alto models. Ensure engine is cool before installation to avoid scalding; use proper tools to tighten to specified torque to prevent thread damage or sealed leaks.