Walker Products 350-34165 front oxygen sensor for the 2000-2002 Mazda 626 V6 2.5L and other vehicles measures the oxygen left in the exhaust gas. The engine computer uses that reading to track combustion efficiency, and this one is a 4-W direct-fit narrow-band design.
- Monitors exhaust gases and reduces pollutants for a cleaner environment
- Measures oxygen levels to help fine-tune the air-fuel mixture for fuel economy
- Watches the oxygen content of the exhaust to follow the air-fuel ratio
- Electrodes made of a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
Quick facts
- Part: Walker Products 350-34165 oxygen sensor
- Fits: 2000-2002 Mazda 626 V6 2.5L and other vehicles
- Position: Upstream front
- 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 this sensor, rule out physical damage to its wiring harness and connector, since a fault there can look like a bad sensor.
Fits
This oxygen sensor fits the 2000-2002 Mazda 626 V6 2.5L and the 2001-2002 Mazda Millenia V6 2.5L.
Specifications
Fit and size
- Position: Upstream front
- Quantity per vehicle: 1
- Thread: M18 - 1.5
- Wires: 4-W
Build and materials
- Type: narrow-band
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. This listing holds a single sensor, and either car takes one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right oxygen sensor for the 2000-2002 Mazda 626 V6 2.5L?
Yes. Walker Products 350-34165 is listed for the 2000-2002 Mazda 626 V6 2.5L as an upstream front sensor, and that car takes one.
Will this oxygen sensor fit the 2001-2002 Mazda Millenia V6 2.5L?
Yes. Walker Products 350-34165 is listed for the 2001-2002 Mazda Millenia V6 2.5L, which takes one sensor.
Is this Walker Products oxygen sensor narrow-band?
Yes. It is a narrow-band sensor in a 4-W design with an M18 - 1.5 thread.
What is the coating on this oxygen sensor's electrodes for?
The electrodes use a gas-permeable platinum layer. A coating keeps combustion residue and particulates in the exhaust from contaminating or eroding the electrode surfaces.
Can a bad oxygen sensor turn on the malfunction indicator light?
Yes. A failed sensor may light the malfunction indicator light, and newer vehicles store fault codes in the ECU, some of which relate to the sensor and its systems.
