Subaru 22641AA520 SEN AY-A/F RATIO

SEN AY-A/F RATIO

Part number: 22641AA520 

Availability: 6

Processing: 2-3 days

Make: Subaru

138.15$

High Precision Oxygen Sensor for Efficient Engine Performance

Why Is This Part Essential

The oxygen sensor is crucial for your vehicle's engine management system. It monitors the level of oxygen in the exhaust gases and sends this data to the engine control unit (ECU). The ECU adjusts the air-fuel mixture to ensure the engine runs smoothly and with optimal fuel efficiency.

How Does It Work

Positioned within the exhaust manifold, this sensor constantly measures oxygen content in the exhaust. When the air-fuel mixture is too rich or too lean, the sensor signals the ECU to correct it. This process helps reduce harmful emissions and maintains engine performance.

What Happens if It Fails

If the oxygen sensor fails, your car may show a check engine light, run rough, consume more fuel, and emit higher levels of pollution. Prolonged driving with a faulty sensor can lead to damage of the catalytic converter and poor overall performance.

Compatibility

  • Legacy