Hyundai / KIA 3921003AA0 SENSOR ASSY-OXYGEN,FR

SENSOR ASSY-OXYGEN,FR

Numéro de pièce: 3921003AA0 

Disponibilité: 6

Traitement: 4-5 jours

Marque: Hyundai / KIA

133.55$

Front Oxygen Sensor for Hyundai & Kia ?️

This front O2 sensor is a key feedback part in the exhaust system. It is needed to help the ECU (engine computer) keep the air/fuel mix correct for smooth power, low fuel use, and clean emissions. When the engine warms up, the sensor quickly starts “reading” oxygen level in the exhaust gases and sends a fast-changing signal to the ECU.

How It Works ⚙️

The sensor sits in the exhaust stream before the main catalyst. Inside is a heated element that reaches operating temperature fast. As oxygen content changes, the sensor voltage/resistance changes too. The ECU uses this data to fine-tune injector pulse, correct fuel trims, and protect the catalytic converter from running too rich or too lean.

What Happens If It’s Broken ❌

A failed sensor can cause the check engine light, rough idle, hesitation, higher fuel consumption, fuel smell, and poor emissions test results. Long-term driving with wrong readings may overheat or clog the catalyst, leading to expensive repairs.

Compatibility ✅

  • Elantra 16 (2015-2018)
  • Elantra 19 (2018-2020)
  • I30 17 (2016-2020)
  • I30 17 (2017-2018)
  • Creta 20 (2020-)
  • Creta/Cantus 20 (2020-)
  • I30
  • Veloster