Walker Products 250-25046 oxygen sensor for the 2007-2013 BMW 328i 6-cylinder 3.0L and other vehicles measures the oxygen in the exhaust gas to gauge combustion efficiency. This Walker Products oxygen sensor passes that reading to the ECU.
- 5-W wide-band design
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Gas-permeable platinum layer on the electrodes
- Measures exhaust oxygen content to monitor the air-fuel ratio and help fine-tune the air-fuel mixture
- Made for its specific application and fitting position; provides the diagnostic feedback the ECU requires
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 250-25046 oxygen sensor
- Fits: 2007-2013 BMW 328i 6-cylinder 3.0L and other vehicles
- Position: Upstream, downstream, upstream left, upstream right, upstream rear
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. Before you replace it, rule out physical damage to the wiring harness and connector, and read the stored fault codes to see which sensor or system they name. This listing is one sensor. Each sensor position on the car takes its own, so the count depends on the vehicle, and most listed cars take one.
Fits
This oxygen sensor is a direct-fit replacement for the 2007-2013 BMW 328i 6-cylinder 3.0L, the 2019-2024 Mercedes-Benz G550 V8 4.0L and the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L, among other vehicles. If your car is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: upstream, downstream, upstream left, upstream right, upstream rear
- Quantity per vehicle: 1 on most listed vehicles, 2 on some
Build and materials
- Type: 5-W wide-band
- Electrodes: gas-permeable platinum layer
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right BMW 328i oxygen sensor replacement for a 2007-2013 car with the 6-cylinder 3.0L?
Yes. Walker Products 250-25046 is listed for the 2007-2013 BMW 328i 6-cylinder 3.0L, with a quantity of 1 for that engine.
Does this oxygen sensor fit the 2019-2024 Mercedes-Benz G550 V8 4.0L?
Yes. Walker Products 250-25046 is also listed for the 2019-2024 Mercedes-Benz G550 V8 4.0L and the 2019-2024 Mercedes-Benz G63 AMG V8 4.0L. Other cars are in the "Vehicles it fits" section.
Is this a narrow-band or wide-band oxygen sensor?
It is a wide-band sensor. Walker Products 250-25046 is a 5-W wide-band oxygen sensor that determines the oxygen content of the exhaust gas to monitor the air-fuel ratio.
Can a failing oxygen sensor turn on the check engine light?
Yes, a failed oxygen sensor can turn on the malfunction indicator light, and it may also make the engine run poorly or raise fuel consumption and emissions. Newer vehicles store fault codes in the ECU.
What does the coating on this oxygen sensor do?
A coating on the electrodes protects their surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases. The electrodes use a gas-permeable platinum layer.
