Walker Products 350-35075 oxygen sensor for the 2012-2013 Mazda 3 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust gas to track the air-fuel ratio. This Walker Products oxygen sensor is a 5-W wide-band unit for the upstream position and gives the ECU the diagnostic feedback it needs.
- Measures oxygen content in the exhaust gas to monitor the air-fuel ratio for combustion efficiency
- Monitors exhaust gases and helps reduce pollutants
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes made with a gas-permeable platinum layer
- Reads oxygen levels so the air-fuel ratio can be fine-tuned, supporting normal fuel economy
Quick facts
- Part: Walker Products 350-35075 oxygen sensor
- Fits: 2012-2013 Mazda 3 4-cylinder 2.0L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace it, rule out physical damage to the wiring harness and connector with the engine off, because damage there can also shorten a sensor's life.
Fits
The 2012-2013 Mazda 3 4-cylinder 2.0L, the 2018-2021 Mazda 6 4-cylinder 2.5L and the 2019-2025 Mazda CX-5 4-cylinder 2.5L all take this oxygen sensor, and so do other Mazda models. Driving a different Mazda? Look up your year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
Build and materials
- Type: 5-W wide-band
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. This listing is a single sensor, and the car needs one in this upstream position.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this Mazda 6 oxygen sensor right for the 2018-2021 Mazda 6 4-cylinder 2.5L?
Yes. Walker Products 350-35075 is an upstream oxygen sensor listed for the 2018-2021 Mazda 6 4-cylinder 2.5L, and the car takes one.
Is this a Mazda 3 oxygen sensor replacement for the 2012-2013 Mazda 3 4-cylinder 2.0L?
Yes. This upstream sensor is listed for the 2012-2013 Mazda 3 4-cylinder 2.0L, and the car takes one. For other Mazda models, use the "Vehicles it fits" section.
Is this upstream oxygen sensor a wide-band type?
Yes. Walker Products 350-35075 is a 5-W wide-band sensor for the upstream position, with electrodes made of a gas-permeable platinum layer.
What can a failing upstream oxygen sensor cause?
The engine can run poorly, fuel consumption and exhaust emissions can rise, or the malfunction indicator light can come on. A shop can read the stored fault codes to see whether the sensor is involved.
What does the coating on this oxygen sensor protect?
The coating protects the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust gas.
