Walker Products Oxygen Sensor P/N:350-64025
Walker Products 350-35026 oxygen sensor for the 2006-2009 Mazda 3 4-cylinder 2.3L, the 2006-2013 3 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. It is the upstream sensor and gives the ECU the diagnostic feedback it requires.
A failing oxygen sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. Worn spark plugs, an intake leak or a damaged wiring harness can be behind those symptoms too, so find the cause before you buy a sensor.
It works as a direct-fit Mazda 3 oxygen sensor replacement for the 2006-2009 model with the 4-cylinder 2.3L and the 2006-2013 model with the 4-cylinder 2.0L. It also fits the 2012-2013 Mazda 3 Sport 4-cylinder 2.0L and the 2008-2010 Mazda 5 4-cylinder 2.3L. This listing is one sensor, and the 2006-2013 Mazda 3 4-cylinder 2.0L takes one.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Is this Walker Products oxygen sensor a wide-band type?
Yes. Walker Products 350-35026 is a 5-W wide-band oxygen sensor that monitors the oxygen content of the exhaust gas and the air fuel ratio.
Is this the right 2008 Mazda 3 oxygen sensor for the 4-cylinder 2.0L or 2.3L?
Yes. Walker Products 350-35026 fits the 2006-2009 Mazda 3 4-cylinder 2.3L and the 2006-2013 Mazda 3 4-cylinder 2.0L, so a 2008 model with either engine is covered.
Will this Mazda 5 oxygen sensor fit the 2008-2010 model with the 4-cylinder 2.3L?
Yes. Walker Products 350-35026 fits the 2008-2010 Mazda 5 4-cylinder 2.3L as the upstream sensor, and that vehicle takes one.
What should I look at if I think this upstream oxygen sensor has failed?
Rough running, higher fuel use, more emissions or a lit malfunction indicator light can be signs. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage.
What does the electrode coating on this oxygen sensor do?
The electrodes are made of a gas-permeable platinum layer. The coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.
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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.