Walker Products 250-241160 oxygen sensor for the 2020 Subaru Outback H4 2.4L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. The Walker Products oxygen sensor is a downstream unit and gives the ECU the diagnostic feedback it expects.
- Narrow-band, 4-wire sensor made for its specific application and fitment position
- Monitors exhaust gases and helps reduce pollutants
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes use a gas-permeable platinum layer
- Oxygen readings let the air-fuel mixture be fine-tuned, which helps fuel economy
Quick facts
- Part: Walker Products 250-241160 oxygen sensor
- Fits: 2020 Subaru Outback H4 2.4L and other vehicles
- Position: Downstream
- Condition: New
A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. An exhaust leak can also cause some of that trouble, so these signs alone do not prove the sensor is at fault. Look over the wiring harness and connector for physical damage as well.
Fits
As a Forester oxygen sensor it fits the 2014-2018 model with the H4 2.0L, and the 2015-2020 Subaru WRX H4 2.0L and other Subaru models take it too.
Specifications
Fit and size
- Position: Downstream
- Quantity per vehicle: 1
Build and materials
- Sensor type: Narrow-Band
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor for the downstream position. Each Subaru it fits takes one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this a Subaru Outback oxygen sensor replacement for a 2020 model with the H4 2.4L?
Yes, Walker Products 250-241160 fits the 2020 Subaru Outback H4 2.4L; for another Subaru, enter your year and engine in the "Vehicles it fits" section to see whether it is covered.
Is this a Subaru WRX oxygen sensor for the 2015-2020 WRX H4 2.0L?
Yes. Walker Products 250-241160 fits the 2015-2020 Subaru WRX H4 2.0L and goes in the downstream position.
Is the Walker Products 250-241160 a narrow-band or a wideband sensor?
It is a narrow-band sensor with four wires, made for the downstream position.
What can a failing downstream oxygen sensor cause?
It can show up as rough running, higher fuel consumption, more exhaust emissions or a lit check engine light. A newer vehicle may also store a fault code in the ECU for the sensor.
What does the coating on this oxygen sensor protect?
The coating keeps combustion residue and particulates in the exhaust from contaminating or eroding the electrode surfaces. The electrodes themselves use a gas-permeable platinum layer.
