22690AA900 Subaru SEN ASSY-OXYGEN, Price: 126.67$, Weight: 0.348kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Subaru |
22690AA900 |
SEN ASSY-OXYGEN |
0 |
0.348 |
|
126.67$ |
| Not Available | ||||||
Originals
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Subaru |
SEN ASSY-OXYGEN
|
0 |
0.4
|
-
|
105.56$
|
Not Available |
Oxygen Sensor Assembly (Front O2)
This sensor is a key part of the fuel and emissions system. It measures how much oxygen is left in the exhaust stream, then sends a signal to the ECU. The ECU uses that data to fine-tune air/fuel ratio so your Subaru runs smooth, saves fuel, and keeps the catalytic converter safe ✅
Why this part is needed
Modern engines must constantly correct fueling as load and temperature change. Without accurate exhaust feedback, the engine cannot stay in proper “closed loop” control. This unit helps keep idle stable, power consistent, and emissions within spec ?
How it works
The sensing element reacts to oxygen content in hot exhaust gas. As the mixture goes rich or lean, the sensor output changes. The built-in heater brings it up to operating temperature quickly, so corrections start sooner after cold start ?
What happens if it’s broken
A failing sensor can cause poor fuel economy, rough idle, hesitation, black smoke, catalyst damage, and a persistent check-engine light. It may also trigger rich/lean fault codes and fail an emissions test ?
Compatible Models
- Impreza
- Forester