Walker Products Oxygen Sensor P/N:250-21024
Walker Products 250-24726 left oxygen sensor for the 2011-2018 Porsche Cayenne V6 3.0L and other vehicles measures the oxygen content of the exhaust gas. It sits downstream, and its readings go back to the ECU for combustion monitoring and diagnostics.
A failing sensor might show up as rough running, higher fuel use, higher emissions or a lit malfunction indicator light. These signs alone do not prove the sensor is the problem, since damaged wiring can also light that same warning.
Beyond the 2011-2018 Porsche Cayenne V6 3.0L, this is an oxygen sensor for the 2007-2010 Audi Q7 V8 4.2L and for the 2007-2009 Volkswagen Touareg V8 4.2L. The downstream left position calls for one sensor on each of these vehicles. This listing is a single sensor, and the other side of the exhaust is a separate part.
Fit and size
Build and materials
Is this the Porsche Cayenne oxygen sensor replacement for the 2011-2018 Porsche Cayenne V6 3.0L?
Yes. Walker Products 250-24726 is the downstream left sensor for the 2011-2018 Porsche Cayenne V6 3.0L, and this listing is a single sensor.
Is this Walker Products oxygen sensor narrow-band or wideband?
It is a narrow-band sensor with 4 wires and an M18 - 1.5 thread. Walker Products 250-24726 is a direct-fit design made for its specific application and position.
What are the electrode coatings on this oxygen sensor for?
The electrodes carry a gas-permeable platinum layer. A coating also protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
What signs can point to a failing downstream oxygen sensor?
The engine may run poorly, fuel use and emissions may rise, or the malfunction indicator light may come on. With the engine off and cool, you can look over the sensor, wiring harness and connector for physical damage.
Does one 250-24726 cover both sides of the exhaust?
No. The 250-24726 is one downstream left sensor, and each vehicle takes one for this position. The other side is a separate part.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.