Walker Products Oxygen Sensor P/N:350-35009
Walker 350-341095 oxygen sensor for the 2016-2019 Toyota Yaris R 4-cylinder 1.5L and other vehicles measures the oxygen content of the exhaust gas. It passes that reading back to the engine computer as diagnostic feedback.
A failing oxygen sensor can show up as rough running, higher fuel use or a lit malfunction indicator light, though other faults produce the same signs. Before replacing it, look over the sensor, its wiring harness and the connector for physical damage with the engine off and cool, since damage there can shorten a sensor's life.
This downstream sensor fits the 2016-2019 Toyota Yaris R 4-cylinder 1.5L and the 2015-2018 Toyota Yaris 4-cylinder 1.5L. Both cars need only one, and this listing is a single sensor.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Is this the Yaris oxygen sensor for the 2015-2018 Toyota Yaris 4-cylinder 1.5L?
Yes. Walker 350-341095 is a downstream oxygen sensor for the 2015-2018 Toyota Yaris 4-cylinder 1.5L, and the car takes one.
Is this Walker oxygen sensor an upstream or downstream sensor?
It is a downstream sensor. This listing is one sensor for that position, so it is not an upstream replacement.
What thread size does this Walker O2 sensor have?
This sensor has an M18 - 1.5 thread, so the mounting port must match that size.
What signs can point to a failing Walker products oxygen sensor?
Poor running, higher fuel consumption or a lit malfunction indicator light can go with a failing sensor, though other faults cause them too. A shop can read the stored fault codes to narrow it down.
Is this oxygen sensor a narrow-band type?
Yes. Walker 350-341095 is a narrow-band oxygen sensor, and its coating protects the electrode surfaces from combustion residue and particulates in the exhaust.
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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.