Walker Products 250-24493 oxygen sensor for the 2005-2009 Audi A8 Quattro W12 6.0L and other vehicles measures combustion efficiency from the amount of oxygen in the exhaust gas. This Walker Products oxygen sensor is a 4-wire, narrow-band, direct-fit unit.
- Electrodes coated with a gas-permeable platinum layer
- Monitors exhaust gases and reduces pollutants for a cleaner environment
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Measures oxygen levels to help fine-tune the air-fuel mixture and fuel economy
- Built for its specific application and position, with the diagnostic feedback the ECU requires
Quick facts
- Part: Walker Products 250-24493 oxygen sensor
- Fits: 2005-2009 Audi A8 Quattro W12 6.0L and other vehicles
- Position: Downstream, downstream left, downstream right, downstream front
- Condition: New
A failing oxygen sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the check engine light. The wiring harness and connector can be behind the same signs, so look them over for physical damage with the engine off and cool, and find the cause before buying a sensor.
Fits
This downstream oxygen sensor also fits the 2004-2007 Volkswagen Touareg V8 4.2L and the 2004 Volkswagen R32 V6 3.2L. This listing is one sensor, and the 2005-2009 Audi A8 Quattro W12 6.0L takes one. If your car is not named here, open the "Vehicles it fits" section and match your exact model and engine there.
Specifications
Fit and size
- Position: Downstream, downstream left, downstream right, downstream front
- Quantity per vehicle: 1
- Wires: 4
Build and materials
- Type: Narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this Touareg oxygen sensor right for the 2004-2007 Volkswagen Touareg V8 4.2L?
Yes. Walker Products 250-24493 is listed for the 2004-2007 Volkswagen Touareg V8 4.2L, and that vehicle takes one sensor.
Is this oxygen sensor upstream or downstream?
This is a downstream oxygen sensor, with its positions listed as downstream, downstream left, downstream right and downstream front.
Is the Walker Products 250-24493 a narrow-band sensor, and how many wires does it have?
Yes, Walker Products 250-24493 is a narrow-band, direct-fit oxygen sensor with 4 wires.
What can a failing downstream oxygen sensor do to the engine?
A failed sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light.
What does the coating on this oxygen sensor protect against?
The coating keeps combustion residue and particulates in the exhaust gas from contaminating or eroding the electrode surfaces. The electrodes themselves are coated with a gas-permeable platinum layer.
