Walker Products 350-34625 oxygen sensor for the 1988-1994 BMW 750iL V12 5.0L and other vehicles measures the oxygen in the exhaust gas to gauge combustion efficiency. The sensor is built for its specific application and position, and it gives the ECU the diagnostic feedback it needs.
- Measures exhaust oxygen content to monitor the air-fuel ratio
- Electrode coating protects against contamination and erosion from combustion residue and particulates
- Monitors exhaust gases to help keep pollutants down
- Oxygen readings help fine-tune the air-fuel mixture for fuel economy
- Electrodes made of a gas-permeable platinum layer
Quick facts
- Part: Walker Products 350-34625 oxygen sensor
- Fits: 1988-1994 BMW 750iL V12 5.0L and other vehicles
- Position: Upstream left, upstream right
- Condition: New
A failing oxygen sensor can show up as rough running, higher fuel use, more exhaust emissions or a check engine light. Before you replace it, look over the sensor, wiring harness and connector for physical damage with the engine off and cool; a shop can run any live tests.
Fits
This is a direct-fit replacement for the 1988-1994 BMW 750iL V12 5.0L, the 1993-1994 BMW 850Ci V12 5.0L and the 1991-1992 BMW 850i V12 5.0L. This listing is one sensor, and the fitment calls for one per car.
Specifications
Fit and size
- Position: upstream left, upstream right
- Quantity per vehicle: 1
Build and materials
- Type: narrow-band
- 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
Is this Walker Products oxygen sensor right for the 1991-1992 BMW 850i V12 5.0L?
Yes. Walker Products 350-34625 is a direct-fit narrow-band oxygen sensor for the 1991-1992 BMW 850i V12 5.0L. The listing is one sensor, and the fitment calls for one per car.
Is the 350-34625 a narrow-band or wideband oxygen sensor?
Narrow-band. Walker Products 350-34625 is a 4-wire sensor with electrodes made of a gas-permeable platinum layer.
Is this an upstream or downstream oxygen sensor?
This sensor is listed for the upstream left and upstream right positions, so it is an upstream unit rather than a downstream one.
What can a failing oxygen sensor cause?
A failed sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the check engine light. Newer vehicles may also store a related fault code in the ECU.
What does the coating on this oxygen sensor do?
The coating on the electrode surfaces keeps combustion residue and exhaust particulates from contaminating or eroding them.
