Walker Products 350-34144 oxygen sensor for the 2000-2005 Volkswagen Passat V6 2.8L and other vehicles measures the oxygen content of the exhaust gas. This Walker Products oxygen sensor is a 4-W direct-fit, narrow-band unit that tracks the air-fuel ratio for combustion efficiency.
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Electrodes made with a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- Measures oxygen levels to help fine-tune the air-fuel mixture and support fuel economy
Quick facts
- Part: Walker Products 350-34144 oxygen sensor
- Fits: the 2000-2005 Volkswagen Passat V6 2.8L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. Those signs alone don't prove the sensor is at fault, since a vacuum leak can upset the engine too. The sensor, its wiring harness and the connector are also worth a look for physical damage.
Fits
The 2000-2005 Volkswagen Passat V6 2.8L, the 2000-2001 Audi A6 Quattro V6 2.7L or 2.8L, the 2000-2004 A6 Quattro V8 4.2L and the 2002-2003 Audi S6 V8 4.2L all take this oxygen sensor, and it fits other vehicles too.
Specifications
Fit and size
- Position: upstream, upstream left, upstream right, upstream front, upstream rear
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Type: 4-W narrow-band
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. This listing holds a single sensor, and the vehicles named on this page take one.
Frequently Asked Questions
Does this VW Passat O2 sensor fit a 2000-2005 Volkswagen Passat V6 2.8L?
Yes. Walker Products 350-34144 fits the 2000-2005 Volkswagen Passat V6 2.8L. If your car isn't named on this page, look it up in the "Vehicles it fits" section before you order.
Is this an oxygen sensor for the 2000-2004 Audi A6 Quattro V8 4.2L?
Yes. Walker Products 350-34144 fits the 2000-2004 Audi A6 Quattro V8 4.2L, as well as the 2000-2001 A6 Quattro V6 2.7L or 2.8L. The fitment calls for one sensor.
What thread size does the Walker Products 350-34144 oxygen sensor have?
The thread is M18 - 1.5. This 4-W narrow-band sensor is listed with a quantity of one per vehicle.
Can a failing narrow-band oxygen sensor cause a check engine light?
Yes. A failed sensor can cause rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Newer vehicles also store fault codes in the ECU.
What does the coating on this oxygen sensor do?
The coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases. The electrodes are made with a gas-permeable platinum layer.
