Walker Products 250-25195 left oxygen sensor for the 2019-2020 Porsche Cayenne V8 4.0L measures the oxygen in the exhaust gas to gauge combustion efficiency. The Walker Products oxygen sensor is made for its specific application and position, and it gives the ECU the diagnostic feedback the system expects.
- Oxygen readings help fine-tune the air-fuel ratio for fuel economy
- Electrodes made of a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Monitors exhaust gases as part of reducing pollutants
- Heated wide-band sensor type
Quick facts
- Part: Walker Products 250-25195 oxygen sensor
- Fits: 2019-2020 Porsche Cayenne V8 4.0L
- Position: Upstream left
- Condition: New
A failing oxygen sensor can show up as rough running, higher fuel use, higher exhaust emissions or a lit malfunction indicator light. The sensor itself may be worn, yet a damaged wiring harness or connector can produce these symptoms too, so with the engine off, look both over for physical damage before replacing the sensor.
Fits
This listing is one sensor for the upstream left position, and the 2019-2020 Porsche Cayenne V8 4.0L takes one there; the other side is a separate part. It is a direct-fit sensor for that engine.
Specifications
Fit and size
- Position: upstream left
- Quantity per vehicle: 1
- Terminals: 6, male
- Wires: 5
- Connector: female, circle shape
Build and materials
- Sensor type: wide-band
- Heated: yes
- Electrodes: gas-permeable platinum layer
- Condition: new
- Country of origin: United States
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this Porsche Cayenne oxygen sensor replacement made for the 2019-2020 Cayenne V8 4.0L?
Yes. Walker Products 250-25195 is a direct-fit upstream left oxygen sensor for the 2019-2020 Porsche Cayenne V8 4.0L, and that engine takes one on that side.
Which side of the 2019-2020 Porsche Cayenne V8 4.0L does this Cayenne oxygen sensor replacement go on?
It is the upstream left sensor, so it goes on the left side. The sensor for the other side is a separate part and is ordered on its own.
Is this oxygen sensor a heated wide-band type?
Yes. Walker Products 250-25195 is a heated wide-band sensor with 5 wires and a connector with 6 male terminals.
What are the electrodes on this oxygen sensor made of?
They are made of a gas-permeable platinum layer, and a coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
What does a bad oxygen sensor do to the engine?
A failed sensor can make the engine run poorly, raise fuel use and exhaust emissions, or turn on the malfunction indicator light. A shop can read the stored fault codes to see which sensor is affected.
