Walker Products 350-34585 oxygen sensor for the 2010-2012 Audi A4 4-cylinder 1.8L and other vehicles measures the oxygen content of the exhaust gas. It is a 4-wire, direct-fit, narrow-band sensor for downstream positions.
- Made for its specific application and fitment position, with the diagnostic feedback the ECU needs
- Monitors exhaust gases to help reduce pollutants
- Measures oxygen levels so the air-fuel mixture can be fine-tuned for fuel economy
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Electrodes made of a gas-permeable platinum layer
Quick facts
- Part: Walker Products 350-34585 oxygen sensor
- Fits: 2010-2012 Audi A4 4-cylinder 1.8L and other vehicles
- Position: Downstream, downstream left, downstream right
- Condition: New
A failing sensor can make the engine run poorly, raise fuel consumption or turn on the malfunction indicator light. Before you replace the sensor, rule out a damaged wiring harness or connector and have any stored fault codes read, because the sensor may not be the cause.
Fits
The 2010-2012 Audi A4 4-cylinder 1.8L and the 2021-2022 Volkswagen Vento 4-cylinder 1.6L take this oxygen sensor, and so do the 2009-2012 Audi Q5 V6 3.2L, the 2010 Q5 4-cylinder 2.0L or V6 3.0L and the 2012-2017 Q5 V6 3.0L, along with many other vehicles.
Specifications
Fit and size
- Position: Downstream, downstream left, downstream right
- Quantity per vehicle: 1 or 2, depending on the vehicle
- Thread: M18 - 1.5
Build and materials
- Type: narrow-band, 4-wire, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. The 2010-2012 Audi A4 4-cylinder 1.8L takes one, and other vehicles take one or two.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right oxygen sensor for the 2010-2012 Audi A4 4-cylinder 1.8L?
Yes. Walker Products 350-34585 is listed for the 2010-2012 Audi A4 4-cylinder 1.8L, which takes one sensor. This listing is a single sensor.
Does the 2021-2022 Volkswagen Vento 4-cylinder 1.6L take this oxygen sensor?
Yes, the 2021-2022 Volkswagen Vento 4-cylinder 1.6L takes one. If your car is not named on this page, look it up in the "Vehicles it fits" section and enter your year, model and engine.
Is this oxygen sensor narrow-band or wideband?
Walker Products 350-34585 is a narrow-band sensor with four wires and a direct-fit design. It has an M18 - 1.5 thread.
How can I tell if a downstream oxygen sensor is failing?
A failed sensor can make the engine run poorly, raise fuel consumption or light the malfunction indicator. A shop can read the stored fault codes and test the sensor.
What does the coating on this oxygen sensor do?
The coating keeps combustion residue and particulates in the exhaust gases from contaminating or eroding the electrode surfaces. The electrodes are made of a gas-permeable platinum layer.
