Walker Products 250-24390 oxygen sensor for the 2000-2003 BMW X5 V8 4.4L, the 2002-2003 X5 V8 4.6L and other vehicles measures the amount of oxygen in the exhaust gas to gauge combustion efficiency. This Walker Products oxygen sensor is a direct-fit, narrow-band unit made for its specific application and fitment position.
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Oxygen readings help fine-tune the air-fuel mixture and support fuel economy
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases and helps reduce pollutants
- Provides the diagnostic system feedback the ECU requires for its specific fitment position
Quick facts
- Part: Walker Products 250-24390 oxygen sensor
- Fits: 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 malfunction indicator light can mean the sensor is worn, though a damaged wiring harness or connector may be behind them. Look both over for physical damage first.
Fits
The sensor is listed for a wide range of BMW models, including the 2000-2003 X5 V8 4.4L, the 2002-2003 X5 V8 4.6L, the 1998-2001 BMW 750iL V12 5.4L and an oxygen sensor for the 1996-1999 BMW 318i 4-cylinder 1.9L. This listing is one sensor, and the fitment lists a quantity of one for each of these engines. If your car is not named here, open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: downstream, downstream left, downstream right
- Quantity: 1 per listing
- Thread size: M18 - 1.5
Build and materials
- Type: narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Coating: protects the electrode surfaces
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does this BMW X5 oxygen sensor fit the 2000-2003 BMW X5 V8 4.4L?
Yes. Walker Products 250-24390 is listed for the 2000-2003 BMW X5 V8 4.4L in the downstream position, with a quantity of one.
Will this BMW X5 O2 sensor work on a 2002-2003 BMW X5 V8 4.6L?
Yes. The 2002-2003 BMW X5 V8 4.6L is in the fitment too, with a quantity of one. This listing is a single downstream sensor.
What thread size does Walker Products 250-24390 use?
Walker Products 250-24390 is a threaded, narrow-band oxygen sensor with an M18 - 1.5 thread.
My engine runs poorly and the check engine light is on. Could this oxygen sensor be involved?
It can be. A failed sensor may cause poor running, higher fuel use, more emissions or a lit warning light, and newer vehicles store fault codes a shop can read.
What protects the electrodes on this narrow-band oxygen sensor?
A coating shields the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases. The electrodes are made of a gas-permeable platinum layer.
