Walker Products 350-34194 oxygen sensor for the 2005-2009 Audi A8 Quattro W12 6.0L and other vehicles measures the oxygen in your exhaust gas. This Walker Products oxygen sensor is a four-wire, narrow-band, direct-fit unit.
- Built for its specific application and fitment position, with the diagnostic feedback the ECU requires
- Reads oxygen levels so the air-fuel ratio can be fine-tuned for combustion efficiency and fuel economy
- Coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust gas
- Monitors exhaust gases to help reduce pollutants
- Electrodes made of a gas-permeable platinum layer
Quick facts
- Part: Walker Products 350-34194 oxygen sensor
- Fits: 2005-2009 Audi A8 Quattro W12 6.0L and other vehicles
- Position: Downstream
- Condition: New
Rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light can mean the sensor is worn, though damage to the wiring harness or connector can be behind the same signs, so look both over before you replace it.
Fits
This direct-fit oxygen sensor suits the 2005-2009 Audi A8 Quattro W12 6.0L, the 2005-2008 Seat Ibiza 4-cylinder 1.8L and the 2004-2007 Volkswagen Touareg V8 4.2L, along with other vehicles. If your car is not named here, look it up in the "Vehicles it fits" section before you order.
Specifications
Fit and size
- Position: Downstream, downstream left, downstream right, downstream front
- Quantity per vehicle: 1
- Number of wires: 4
Build and materials
- Type: Narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Coating: protects the electrode surfaces
- Condition: New
In the box
One oxygen sensor. This listing is a single sensor, and each application in the fitment calls for one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is Walker Products 350-34194 the right oxygen sensor for a 2004-2007 Volkswagen Touareg V8 4.2L?
Yes. Walker Products 350-34194 is listed for the 2004-2007 Volkswagen Touareg V8 4.2L, and that application takes one sensor.
Can I use this oxygen sensor on a 2005-2008 Seat Ibiza 4-cylinder 1.8L?
Yes. Walker Products 350-34194 is listed for the 2005-2008 Seat Ibiza 4-cylinder 1.8L, and that application takes one sensor.
Is this downstream sensor narrow-band, and how many wires does it have?
This downstream oxygen sensor is a narrow-band design with four wires and a direct-fit build.
What signs can a failing exhaust oxygen sensor cause?
A failing sensor can bring rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Newer vehicles store fault codes in the ECU, and some of them relate to the affected sensor.
What does the coating on this oxygen sensor's electrodes do?
The coating shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates. The electrodes themselves are a gas-permeable platinum layer.
