Walker Products 250-24487 oxygen sensor for the 2005-2009 Subaru Outback H6 3.0L, the 2010-2019 Outback H6 3.6L, the 2013-2020 Outback H4 2.5L and other vehicles measures the oxygen content of the exhaust gas. The ECU uses its readings to monitor combustion efficiency and the air-fuel ratio, which helps cut pollutants.
- Gas-permeable platinum layer on the electrodes
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Oxygen readings help fine-tune the air-fuel mixture, which supports fuel economy
- Narrow-band sensor with 4 wires
- Built for a specific application and position, giving the diagnostic feedback the ECU requires
Quick facts
- Part: Walker Products 250-24487 oxygen sensor
- Fits: the 2005-2009 Subaru Outback H6 3.0L, the 2010-2019 Outback H6 3.6L, the 2013-2020 Outback H4 2.5L and other vehicles
- Position: Downstream, downstream left, downstream right
- Condition: New
A failed sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or switch on the malfunction indicator light. These signs alone do not prove the sensor is at fault, since a vacuum leak can cause a rough-running engine too. The sensor, wiring harness and connector should also be checked for physical damage, which a shop can do.
Fits
This direct-fit sensor is listed for a wide range of Subaru models, led by the Outback runs named above and the 2009-2020 Subaru Forester H4 2.5L. It also works as a Subaru Impreza oxygen sensor for the 2008-2014 Impreza H4 2.5L and the 2012-2020 Impreza H4 2.0L. This listing is one sensor, and each listed vehicle takes one.
Specifications
Fit and size
- Position: downstream, downstream left, downstream right
- Quantity per vehicle: 1
Build and materials
- Type: narrow-band
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: new
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right Subaru Outback oxygen sensor replacement for a 2010-2019 model with the H6 3.6L?
Yes. Walker Products 250-24487 is listed for the 2010-2019 Subaru Outback H6 3.6L, the 2005-2009 Outback H6 3.0L and the 2013-2020 Outback H4 2.5L. If your car is another model, look it up in the "Vehicles it fits" section.
Is this a 2005 Subaru Outback oxygen sensor for the H6 3.0L?
Yes. Walker Products 250-24487 is listed for the 2005-2009 Subaru Outback H6 3.0L, so a 2005 model with that engine is covered.
Is this Walker Products oxygen sensor narrow-band or wideband?
Narrow-band. This sensor has 4 wires and a gas-permeable platinum layer on its electrodes.
Can a failing oxygen sensor raise fuel consumption or trigger the check engine light?
Yes, a failed sensor can do either, and it can also raise exhaust emissions. On newer vehicles, a shop can read the stored fault codes to see which sensor is involved.
What does the coating on this oxygen sensor's electrodes do?
It shields the electrode surfaces from fouling and wear caused by combustion residue and particulates in the exhaust gases.
