Walker Products 350-35015 oxygen sensor for the 2002-2004 Volkswagen Passat W8 4.0L and other vehicles measures the oxygen in the exhaust gas so the ECU can track the air-fuel ratio.
- Wide-band design that determines the oxygen content of the exhaust gas
- Electrodes made of a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Monitors the air-fuel ratio to follow combustion efficiency
- Made for its specific application and fitment position, with the diagnostic feedback the ECU requires
Quick facts
- Part: Walker Products 350-35015 oxygen sensor
- Fits: 2002-2004 Volkswagen Passat W8 4.0L and other vehicles
- Position: Upstream, upstream left, upstream right, upstream front
- Condition: New
A failing sensor can show up as a rough-running engine, higher fuel consumption or a lit malfunction indicator light. Before you replace it, rule out physical damage to the wiring harness and connector, because damage there can also shorten a sensor's life. This listing is one sensor, and the 2002-2004 Volkswagen Passat W8 4.0L takes one.
Fits
It is listed for a wide range of Volkswagen, Audi, Seat and Porsche models, among them the 2004-2009 Audi S4 V8 4.2L and the 2006-2008 Volkswagen Sharan 4-cylinder 1.8L, along with the Passat.
Specifications
Fit and size
- Position: Upstream, upstream left, upstream right, upstream front
- Quantity per vehicle: 1
- Thread: M18 - 1.5
Build and materials
- Type: Wide-Band, 5-W
- Electrodes: made of a 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 VW Passat O2 sensor for the 2002-2004 Volkswagen Passat W8 4.0L?
Yes. Walker Products 350-35015 is listed for the 2002-2004 Volkswagen Passat W8 4.0L, which takes one. For another car, look up its year, model and engine in the "Vehicles it fits" section.
Will Walker Products 350-35015 work as an Audi S4 oxygen sensor on the 2004-2009 V8 4.2L?
Yes. Walker Products 350-35015 is listed for the 2004-2009 Audi S4 V8 4.2L, which takes one.
What thread does this wide-band oxygen sensor have?
This sensor has an M18 - 1.5 thread. It is a wide-band type listed as 5-W.
How can I tell if a wide-band oxygen sensor is going bad?
A failing sensor can show up as rough running, higher fuel consumption or a lit malfunction indicator light. A shop can read the stored fault codes to see whether they relate to the sensor.
What is the electrode coating on this oxygen sensor for?
The coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes are made of a gas-permeable platinum layer.
