Walker Products 250-25102 oxygen sensor for the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and other vehicles measures combustion efficiency from the amount of oxygen in the exhaust gas. It is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it needs.
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Monitors exhaust gases and helps reduce pollutants
- Electrodes made of a gas-permeable platinum layer
- Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio
- Measures oxygen levels to help fine-tune the air-fuel mixture and support fuel economy
Quick facts
- Part: Walker Products 250-25102 oxygen sensor
- Fits: 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor might make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. A damaged wiring harness or connector can be behind these signs too, so find the cause before you buy a sensor. This listing is one sensor, and each listed engine takes one in the upstream position.
Fits
It is listed for a wide range of Mazda, Scion and Toyota models, among them the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and the 2014-2017 Mazda 6 4-cylinder 2.5L. It also works as a Mazda CX-5 oxygen sensor for the 2013-2017 CX-5 4-cylinder 2.0L and the 2014-2018 CX-5 4-cylinder 2.5L.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
Build and materials
- Type: Wide-band
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right Mazda 6 oxygen sensor for 2014-2017 cars with the 4-cylinder 2.5L?
Yes. Walker Products 250-25102 is listed as an upstream sensor for the 2014-2017 Mazda 6 4-cylinder 2.5L, and that engine takes one.
Is this Mazda 3 oxygen sensor replacement right for 2014-2018 cars with the 4-cylinder 2.0L or 2.5L?
Yes. Walker Products 250-25102 is listed for the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L. If your car is not named on this page, look it up in the "Vehicles it fits" section.
Is the Walker Products 250-25102 a wide-band oxygen sensor?
Yes. This upstream oxygen sensor is a wide-band type, with electrodes made of a gas-permeable platinum layer.
Can a failing upstream oxygen sensor store a fault code?
Yes. Newer vehicles store fault codes in the ECU, and some of them relate to the affected sensor and its associated systems.
What does the coating on this oxygen sensor protect?
The coating keeps combustion residue and particulates in the exhaust gases from contaminating and eroding the electrode surfaces.
