Walker Products 350-34391 oxygen sensor for the 2010-2012 Mazda CX-7 4-cylinder 2.5L measures the oxygen content of the exhaust gas. Built for its specific application and position, it gives the ECU the diagnostic feedback the system requires.
- 4-wire narrow-band sensor for the downstream position
- Coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust gas
- Electrodes made with a gas-permeable platinum layer
- Measures oxygen level in the exhaust gas to help fine-tune the air-fuel mixture and fuel economy
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 350-34391 oxygen sensor
- Fits: 2010-2012 Mazda CX-7 4-cylinder 2.5L
- Position: Downstream
- Condition: New
A failing oxygen sensor can show up as the engine running poorly, higher fuel use or a lit malfunction indicator light. Other faults produce these symptoms too, so with the engine off and cool, look over the sensor, its wiring harness and the connector for physical damage before you buy a new one. If the sensor is the cause, this one replaces it.
Fits
This downstream sensor is a direct-fit replacement for the 2010-2012 Mazda CX-7 4-cylinder 2.5L.
Specifications
Fit and size
- Position: downstream
- Quantity per vehicle: 1
- Number of wires: 4
Build and materials
- Type: narrow-band
- Electrodes: gas-permeable platinum layer
- Coating: on the electrode surfaces
- Condition: new
In the box
One oxygen sensor. The 2010-2012 Mazda CX-7 4-cylinder 2.5L takes one.
Interchange: CTK-OSMA4002
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does this Walker Products oxygen sensor fit the 2010-2012 Mazda CX-7 4-cylinder 2.5L?
Yes. Walker Products 350-34391 is a direct-fit downstream oxygen sensor for the 2010-2012 Mazda CX-7 4-cylinder 2.5L, which takes one.
Is this narrow-band oxygen sensor upstream or downstream?
It is a downstream sensor. Walker Products 350-34391 is a 4-wire narrow-band oxygen sensor made for that position.
What are the electrodes on this oxygen sensor made of?
The electrodes have a gas-permeable platinum layer. A coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gas.
How can I tell if this 4-wire oxygen sensor is going bad?
A failing sensor can show as rough running, higher fuel use or a malfunction indicator light. Newer vehicles store fault codes in the ECU, and some relate to the affected sensor.
Does Walker Products 350-34391 interchange with CTK-OSMA4002?
Yes. CTK-OSMA4002 is listed as an interchange number for Walker Products 350-34391.
