Walker Products Oxygen Sensor P/N:350-35009
Walker Products 350-341069 oxygen sensor for the 2017-2020 Ford Fusion 4-cylinder 2.5L measures the oxygen content of the exhaust gas. It is made for its specific application and sensor position, and it gives the ECU the diagnostic feedback it expects.
A failing oxygen sensor can show up as a rough-running engine, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Other faults can look the same, so with the engine off and cool, look over the sensor, its wiring harness and the connector for physical damage before you replace anything.
This oxygen sensor for the 2017-2020 Ford Fusion with the 4-cylinder 2.5L engine (L4-2.5L) is an OE-replacement for the downstream position.
Fit and size
Build and materials
One oxygen sensor. This listing holds one sensor, and the 2017-2020 Ford Fusion 4-cylinder 2.5L takes one.
Does this oxygen sensor fit the 2017-2020 Ford Fusion 4-cylinder 2.5L?
Yes. Walker Products 350-341069 is made for the downstream position on the 2017-2020 Ford Fusion 4-cylinder 2.5L (L4-2.5L), and that engine takes one.
Is this Walker Products oxygen sensor narrow-band or wideband?
Narrow-band. Walker Products 350-341069 is a direct-fit, narrow-band sensor with 4 wires.
Is this a downstream or an upstream oxygen sensor?
It is a downstream sensor, made for the downstream fitment position. It is not the upstream sensor.
What are the electrodes on this oxygen sensor made of?
The electrodes use a gas-permeable platinum layer. A coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
Will a bad oxygen sensor set a fault code in the ECU?
Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its systems. A shop can read them and test the sensor.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.