Walker Products 350-341055 oxygen sensor for the 2022-2025 BMW Alpina B8 Gran Coupe V8 4.4L and other vehicles measures exhaust oxygen to gauge combustion efficiency. The reading goes to the ECU, which uses it to fine-tune the air-fuel mixture.
- Heated narrow-band sensor that measures the oxygen content of the exhaust gas
- Electrodes with a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Monitors the air-fuel ratio so the ECU can adjust for combustion efficiency
- Made for its specific application and position, and gives the ECU the diagnostic feedback it requires
Quick facts
- Part: Walker Products 350-341055 oxygen sensor
- Fits: 2022-2025 BMW Alpina B8 Gran Coupe V8 4.4L and other vehicles
- Position: Downstream, downstream left, downstream right
A failing sensor can show up as a rough-running engine, higher fuel consumption or a lit malfunction indicator light. Exhaust leaks, a damaged wiring harness or connector, and ignition faults can be behind the same complaints, so track down the cause before you buy a sensor.
Fits
The sensor is listed for a wide range of BMW models, including the 2019-2025 BMW M850i xDrive V8 4.4L and the 2020-2025 BMW M850i xDrive Gran Coupe V8 4.4L. Open the "Vehicles it fits" section to find your own model and engine.
Specifications
Fit and size
- Position: downstream, downstream left, downstream right
- Quantity per vehicle: 1
- Overall length: 33.46 in (850 mm)
- Mounting type: threaded
- Terminals: 4 male pins, female oblong connector
- Wires: 4, wire gauge 20
Build and materials
- Sensor type: narrow-band, heated
- Electrodes: gas-permeable platinum layer
- Grade: standard replacement
- Country of origin: China
In the box
This listing is one oxygen sensor; each application in the fitment takes one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is the Walker Products 350-341055 oxygen sensor right for the 2022-2025 BMW Alpina B8 Gran Coupe V8 4.4L?
Yes, Walker Products 350-341055 is listed for the 2022-2025 BMW Alpina B8 Gran Coupe V8 4.4L, one sensor per vehicle. For another model or engine, look it up in the "Vehicles it fits" section.
Is this oxygen sensor wideband or narrow-band?
It is a narrow-band sensor, and it is heated. It has 4 wires and a female oblong connector with 4 pin terminals.
Does this oxygen sensor go upstream or downstream?
Walker Products 350-341055 is a downstream oxygen sensor. It is listed for the downstream, downstream left and downstream right positions.
Can a bad oxygen sensor cause higher fuel consumption?
It can. A failing sensor can cause rough running, higher fuel consumption or a lit malfunction indicator light, and a shop can read any stored fault codes.
How long is this oxygen sensor and how does it mount?
This sensor is 33.46 in (850 mm) long overall and has a threaded mount. Its connector is female and oblong, with 4 pin terminals.
