Oxygen Sensor for 1991 BMW 318is - Walker 250-24025

$125.99
WARNING:California Proposition 65▾
Walker Products Oxygen Sensor 250-24025
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Walker Products Oxygen Sensor 250-24025
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Vehicles this part fits
    Part number: 250-24025
    UPC: 724620017964
    Condition: New
    Weight: 0.30 LBS
    Item Package Code: EA
    Part Has Core (Y/N): N
    Item Package Quantity: 1
    $125.99
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    Walker Products Oxygen Sensor P/N:250-24025
    Walker Products Oxygen Sensor P/N:250-24025
    $125.99
    $125.99

    Walker Products 250-24025 oxygen sensor for the 1991 BMW 318is 4-cylinder 1.8L measures the oxygen content of the exhaust gas. It is made for this specific application and fitment position, and it gives the ECU the diagnostic feedback the system requires.

    • Electrodes with 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

    Quick facts

    • Part: Walker Products 250-24025 oxygen sensor
    • Fits: 1991 BMW 318is 4-cylinder 1.8L
    • Position: Upstream
    • Condition: New

    A failing sensor can show up as a rough-running engine, higher fuel consumption or a lit malfunction indicator light, and each of those has other possible causes. With the engine off and cool, look over the sensor, its wiring harness and the connector for physical damage; a shop can read any stored codes.

    Fits

    This oxygen sensor is a direct-fit replacement for the 1991 BMW 318is 4-cylinder 1.8L, which takes one in the upstream position. This listing is one sensor.

    Specifications

    Fit and size

    • Position: Upstream
    • Quantity per vehicle: 1
    • Thread size: M18 - 1.5

    Build and materials

    • Type: narrow-band, 4-wire, direct fit
    • Electrodes: gas-permeable platinum layer
    • Condition: New

    Frequently Asked Questions

    Is this a 1991 BMW 318is oxygen sensor for the 4-cylinder 1.8L engine?

    Yes. Walker Products 250-24025 is made for the 1991 BMW 318is 4-cylinder 1.8L, which takes one sensor in the upstream position.

    What thread size does this narrow-band oxygen sensor have?

    The Walker Products 250-24025 has an M18 - 1.5 thread. It is a 4-wire, narrow-band, direct-fit sensor.

    Is the 250-24025 an upstream or downstream oxygen sensor?

    This sensor is made for the upstream position. It reads the oxygen content of the exhaust gas for the ECU.

    Can a worn oxygen sensor cause a check-engine light and higher fuel use?

    Yes, it can. A failed sensor can make the engine run poorly, use more fuel or turn on the malfunction indicator light, and a shop can read the stored codes.

    What does the coating on this Walker Products oxygen sensor protect?

    The coating keeps combustion residue and particulates from contaminating or eroding the electrode surfaces. The electrodes themselves have a gas-permeable platinum layer.

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