Walker Products Oxygen Sensor P/N:350-35009
Walker Products 350-34313 front oxygen sensor for the 2004-2005 Mazda Miata 4-cylinder 1.8L and other vehicles measures the oxygen in the exhaust gas. The reading shows combustion efficiency and the air-fuel ratio.
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. The wiring harness or the connector can be behind the same signs, so look both over for physical damage before you replace the sensor.
This is an oxygen sensor for the 2004-2005 Mazda Miata 4-cylinder 1.8L, the 1999-2003 Mazda Protege 4-cylinder 1.6L and the 2000-2001 Mazda MPV V6 2.5L, and it is a direct-fit replacement for each. The 2000-2001 Mazda MPV V6 2.5L takes one sensor, and so do the other two.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Does the Walker Products 350-34313 fit the 1999-2003 Mazda Protege 4-cylinder 1.6L?
Yes. The Walker Products 350-34313 is listed for the 1999-2003 Mazda Protege 4-cylinder 1.6L, which takes one in the upstream front position.
Is this Walker Products oxygen sensor narrow-band or wide-band?
It is narrow-band. The Walker Products 350-34313 is a four-wire narrow-band sensor that measures the oxygen content of the exhaust gas.
What thread size does this front oxygen sensor use?
The threaded body of this front oxygen sensor is M18 - 1.5.
What can a failing upstream oxygen sensor do to the engine?
It can lead to rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. On newer vehicles a shop can read the stored fault codes to see whether the sensor is involved.
What protects the electrodes on this oxygen sensor from exhaust deposits?
A coating on the electrode surfaces prevents contamination and erosion from combustion residue and particulates in the exhaust gas. The electrodes use a gas-permeable platinum layer.
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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.