Walker Products 250-23016 oxygen sensor for the 1988 BMW 325 6-cylinder 2.7L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor has three wires, is narrow-band, and is made for its specific application and fitment position.
- Monitors the air-fuel ratio through the oxygen content of the exhaust gas
- Oxygen readings help fine-tune the air-fuel mixture for fuel economy
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 250-23016 oxygen sensor
- Fits: 1988 BMW 325 6-cylinder 2.7L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel consumption or a lit check engine light. None of those proves the sensor is the culprit, since a vacuum leak can produce similar symptoms, so find the cause first. Inspect the harness and connector for physical damage too. This listing is one upstream sensor, and one goes in that position.
Fits
This upstream oxygen sensor also fits the 1984-1987 BMW 325e 6-cylinder 2.7L and the 1986-1987 BMW 325es 6-cylinder 2.7L. If your BMW is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
Build and materials
- Type: Narrow-band, direct fit
- Wires: 3
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will this BMW 325 oxygen sensor work in a 1988 BMW 325 6-cylinder 2.7L?
Yes. Walker Products 250-23016 is listed for the 1988 BMW 325 6-cylinder 2.7L as an upstream sensor, and that car takes one.
Is the Walker Products 250-23016 a narrow-band or wideband sensor?
Narrow-band. Walker Products 250-23016 is a 3-wire, narrow-band oxygen sensor.
What is the coating on this oxygen sensor's electrodes for?
It shields the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust gas. The electrodes themselves are a gas-permeable platinum layer.
How can I tell if this oxygen sensor is going bad?
Signs can include rough running, higher fuel consumption or a check engine light. Newer vehicles may also store a fault code in the ECU that relates to the sensor.
Is this an upstream or downstream oxygen sensor?
Upstream. This sensor is made for the upstream position, and the listing is one sensor.
