3921004000 Hyundai / KIA SENSOR ASSY-OXYGEN,FRT, Price: 136.65$, Weight: 0.107kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Hyundai / KIA |
3921004000 |
SENSOR ASSY-OXYGEN,FRT |
3 |
0.107 |
4-5 |
136.65$ |
Front Oxygen (O2) Sensor Assembly for Precise Fuel Control ?
This front oxygen sensor is a key input for the engine computer to keep the air-fuel mixture balanced. It’s needed to maintain strong performance, stable idle, and clean emissions while protecting expensive parts like the catalytic converter.
How It Works ⚙️
Mounted in the exhaust stream, the sensor “sniffs” leftover oxygen after combustion and sends a voltage signal to the ECU. The ECU then adjusts fuel injector timing in real time. When the sensor reacts quickly, the engine runs smoother, uses less fuel, and meets emission standards.
Signs of a Failing Sensor ❗
If this sensor is weak or damaged, the ECU may run rich or lean. That can cause poor acceleration, higher fuel consumption, rough idle, exhaust smell, and a check engine light. Long-term driving with a bad O2 sensor may overheat the catalytic converter and increase carbon buildup.
Why Replace It Now ✅
A fresh sensor restores correct feedback control, improves drivability, and helps prevent costly exhaust and catalyst repairs.
Compatibility ?
- Challenger