Walker Products 250-24466 oxygen sensor for the 2011-2012 BMW 740i 6-cylinder 3.0L and other vehicles reads the oxygen in the exhaust gas to judge combustion efficiency. This narrow-band, direct-fit sensor is made for a specific application and fitment position.
- Measures oxygen levels in the exhaust to fine-tune the air-fuel mixture and help fuel economy
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes use a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- Four-wire design
Quick facts
- Part: Walker Products 250-24466 oxygen sensor
- Fits: 2011-2012 BMW 740i 6-cylinder 3.0L and other vehicles
- Position: Downstream, upstream right, downstream left, downstream right
- Condition: New
A failing sensor can show up as an engine that runs poorly, higher fuel use or a lit check engine light. Those signs alone do not prove the sensor is at fault, because a vacuum leak can also make an engine run poorly, so find the cause first. With the engine off and cool, the sensor, wiring harness and connector can be inspected for physical damage.
Fits
This sensor is listed for a wide range of BMW and Mercedes-Benz models, including the 2011-2012 BMW 740Li 6-cylinder 3.0L and the 2008-2010 BMW X6 6-cylinder 3.0L or V8 4.4L. This listing is one sensor; the quantity for the cars named here is one. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: Downstream, upstream right, downstream left, downstream right
- Quantity per application: 1
Build and materials
- Type: Narrow-band, direct fit
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does this BMW X6 oxygen sensor fit the 2008-2010 BMW X6 with the 6-cylinder 3.0L or V8 4.4L?
Yes. Walker Products 250-24466 is listed for the 2008-2010 BMW X6 6-cylinder 3.0L and V8 4.4L, one sensor per application. Use the "Vehicles it fits" section for other models.
Is the Walker Products 250-24466 a narrow-band or wide-band sensor?
Walker Products 250-24466 is a narrow-band, four-wire sensor with a direct-fit design.
Is this oxygen sensor an upstream or downstream sensor?
Its listed positions are downstream, upstream right, downstream left and downstream right.
Can a rough-running engine mean this oxygen sensor has failed?
A failed sensor can show up as poor running, higher fuel use or a check engine light. A shop can read the stored fault codes to see whether the sensor is involved.
What does the coating on this sensor's electrodes do?
The coating shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust. The electrodes themselves use a gas-permeable platinum layer.
