Walker Products 250-24310 oxygen sensor for the 1987-1988 BMW 325is 6-cylinder 2.5L and other vehicles reads the oxygen in the exhaust gas to gauge combustion efficiency. It is a narrow-band, 4-wire sensor for the upstream position, and this listing is one sensor.
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- 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
- Made for its specific application and fitment position, with the diagnostic feedback the ECU requires
Quick facts
- Part: Walker Products 250-24310 oxygen sensor
- Fits: the 1987-1988 BMW 325is 6-cylinder 2.5L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. A vacuum leak can make an engine run poorly too, so those signs alone do not prove the sensor is at fault. With the engine off, also look over the wiring harness and connector for physical damage.
Fits
The 1987-1988 BMW 325is 6-cylinder 2.5L, the 1988 BMW 325i 6-cylinder 2.5L and the 1988 BMW 325iX 6-cylinder 2.5L take this direct-fit sensor, and so do other BMW models. If your BMW is not one of these, find its year and engine in the "Vehicles it fits" section. The fitment calls for one sensor in the upstream position.
Specifications
Fit and size
- Position: upstream
- Quantity per vehicle: 1
Build and materials
- Type: narrow-band
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: new
Frequently Asked Questions
Is this the right oxygen sensor for a 1988 BMW 325i 6-cylinder 2.5L?
Yes. Walker Products 250-24310 is listed for the 1988 BMW 325i 6-cylinder 2.5L in the upstream position. For other BMW years or engines, use the "Vehicles it fits" section.
Is the Walker Products 250-24310 a narrow-band or a wideband sensor?
It is a narrow-band sensor with 4 wires. Walker Products 250-24310 is made for the upstream position.
What is the platinum layer on this oxygen sensor for?
The electrodes are made of a gas-permeable platinum layer. A coating over the electrode surfaces keeps combustion residue and particulates in the exhaust from contaminating or eroding them.
What can a failing upstream oxygen sensor do to the engine?
The engine can run poorly, burn more fuel, put out more exhaust emissions or light the malfunction indicator lamp. Damage to the sensor's wiring or connector can shorten its working life.
How does this oxygen sensor help fuel economy?
It measures the oxygen level in the exhaust so the air-fuel mixture can be fine-tuned, which supports fuel economy. It also gives the ECU the diagnostic feedback it needs.
