Walker Products Oxygen Sensor P/N:250-25144
Walker Products 250-54044 oxygen sensor for the 2009-2011 Mazda RX-8 1.3L measures the oxygen in the exhaust gas to show how efficiently the engine is burning fuel. Made for its specific application and upstream fitment position, it gives the ECU the diagnostic feedback it expects.
A failing oxygen sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. A damaged wiring harness or connector can be behind these signs too, so track down the real cause before you order a sensor.
This is the oxygen sensor for the 2009-2011 Mazda RX-8 1.3L. The listing is one sensor, and that engine takes one, in the upstream position.
Fit and size
Build and materials
Is this the right upstream oxygen sensor for the 2009-2011 Mazda RX-8 1.3L?
Yes. Walker Products 250-54044 is an upstream sensor listed for the 2009-2011 Mazda RX-8 1.3L, and that engine takes one.
Is this Walker Products oxygen sensor a wide-band type?
Yes. Walker Products 250-54044 is a wide-band air-fuel ratio sensor with four wires.
What are the electrodes on this oxygen sensor made of?
The electrodes are made of a gas-permeable platinum layer, and the sensor's coating guards their surfaces against combustion residue and particulates.
What signs can point to a failing upstream oxygen sensor?
The engine can run poorly, fuel use or emissions can climb, or the malfunction indicator light can come on. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage.
Can a failing oxygen sensor store a fault code in newer vehicles?
Yes. Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its associated systems. A shop can read the stored codes to help narrow down the cause.
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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.