Walker Products 350-34512 oxygen sensor for the 2000-2003 BMW X5 V8 4.4L, the 2002-2003 X5 V8 4.6L and other vehicles measures the oxygen content of the exhaust gas. This Walker Products oxygen sensor is a four-wire, narrow-band direct-fit unit built for its specific application and position.
- Oxygen sensing that tracks the air-fuel ratio for combustion efficiency
- Oxygen readings help fine-tune the air-fuel mixture and support fuel economy
- Exhaust gas monitoring that helps reduce pollutants
- Electrodes with a gas-permeable platinum layer
- Electrode coating that prevents contamination and erosion from combustion residue and particulates in the exhaust gases
Quick facts
- Part: Walker Products 350-34512 oxygen sensor
- Fits: the 2000-2003 BMW X5 V8 4.4L, the 2002-2003 X5 V8 4.6L and other vehicles
- Position: Downstream, downstream left, downstream right
- Condition: New
A rough-running engine, higher fuel use, more exhaust emissions or a lit check engine light can point to a failed sensor. A damaged wiring harness or connector, or another engine fault, can also be behind these signs, so with the engine off and cool, look the harness and connector over for damage and find the cause before buying a sensor.
Fits
Vehicles it fits include the 2000-2003 BMW X5 V8 4.4L, the 2002-2003 X5 V8 4.6L and the 1998-2001 BMW 750iL V12 5.4L, and it is an oxygen sensor for the 1996-1999 BMW 318i 4-cylinder 1.9L too. If your car is not named here, open the "Vehicles it fits" section and look up your exact model and engine.
Specifications
Fit and size
- Position: downstream, downstream left, downstream right
- Quantity per application: 1
- Thread size: M18 - 1.5
- Wires: 4
Build and materials
- Type: narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. The 2000-2003 BMW X5 V8 4.4L takes one.
Interchange: CTK-OSBW4002
Frequently Asked Questions
Is this the right BMW X5 oxygen sensor for a 2000-2003 BMW X5 V8 4.4L?
Yes. Walker Products 350-34512 is listed for the 2000-2003 BMW X5 V8 4.4L, with one sensor needed per application.
Is this an O2 sensor for the 2002-2003 BMW X5 V8 4.6L too?
Yes. The 2002-2003 BMW X5 V8 4.6L is on the fitment list for this downstream-position sensor. For other models, open the "Vehicles it fits" section.
How many wires does this Walker Products oxygen sensor have?
Walker Products 350-34512 is a four-wire, narrow-band direct-fit sensor.
What can a failing downstream oxygen sensor do to the way my engine runs?
A failed sensor can make the engine run poorly, raise fuel consumption and exhaust emissions, or light the malfunction indicator light. Newer vehicles also store fault codes in the ECU, some tied to the sensor.
What does the coating on this oxygen sensor's electrodes protect against?
The coating keeps combustion residue and particulates in the exhaust gases from contaminating or eroding the electrode surfaces. Those electrodes carry a gas-permeable platinum layer.
