Walker Products 250-25171 right oxygen sensor for the 2017-2020 Ford F-150 V6 3.5L and other vehicles measures the oxygen in the exhaust gas to show combustion efficiency. This Walker Products oxygen sensor is a direct-fit wide-band unit, made for its specific application and position, that gives the diagnostic feedback the ECU requires.
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gas
- Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio for combustion efficiency
- Oxygen readings let the air-fuel mixture be fine-tuned to help fuel economy
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 250-25171 oxygen sensor
- Fits: 2017-2020 Ford F-150 V6 3.5L and other vehicles
- Position: Upstream, upstream right
- Condition: New
A failing oxygen sensor can show up as poor running, higher fuel use or a lit malfunction indicator light. Before you replace the sensor, inspect its wiring harness and connector for physical damage, because damage there also shortens a sensor's operating life.
Fits
It is listed for a wide range of Ford and Lincoln models, including the 2017-2020 Ford F-150 V6 3.5L and the 2015-2018 Ford Focus 3-cylinder 1.0L. It is also a Ford Expedition oxygen sensor, listed for the 2018-2021 model with the V6 3.5L engine. This listing is one sensor for the upstream right position, each of these takes one in that position, and a sensor for any other position is a separate part.
Specifications
Fit and size
- Position: upstream, upstream right
- Quantity per vehicle: 1
- Thread: M18 - 1.5
Build and materials
- Type: wide-band, direct fit
- Electrodes: made of a gas-permeable platinum layer
- Condition: New
Frequently Asked Questions
Is this Ford F-150 oxygen sensor right for a 2017-2020 F-150 V6 3.5L?
Yes. Walker Products 250-25171 is listed for the 2017-2020 Ford F-150 V6 3.5L as an upstream right sensor. To see whether your own car is covered, look it up in the "Vehicles it fits" section.
Is this a Ford Focus oxygen sensor for the 2015-2018 Focus 3-cylinder 1.0L?
Yes. Walker Products 250-25171 is listed for the 2015-2018 Ford Focus 3-cylinder 1.0L, and that car takes one.
What kind of sensor is this Walker Products oxygen sensor?
This sensor is a wide-band, direct-fit unit with an M18 - 1.5 thread. Its electrodes are made of a gas-permeable platinum layer.
How do I know if this upstream oxygen sensor is failing?
A failing sensor can show up as poor running, higher fuel use or a malfunction indicator light. A shop can read the stored fault codes.
Why does this oxygen sensor have a coating on its electrodes?
The coating protects the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust gas.
