Oxygen Sensor for 2017-2021 BMW M240i & More - DENSO 234-8012

$147.99
DENSO Auto Parts Oxygen Sensor 234-8012
DENSO Auto Parts Oxygen Sensor 234-8012

Vehicles this part fits
    Part number: 234-8012
    UPC: 042511123083
    Condition: New
    Weight: 0.30 LBS
    Item Package Code: EA
    Part Has Core (Y/N): N
    Item Package Quantity: 1
    $147.99
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    DENSO Auto Parts Oxygen Sensor P/N:234-8012
    DENSO Auto Parts Oxygen Sensor P/N:234-8012
    $147.99
    $147.99

    DENSO Auto Parts 234-8012 oxygen sensor for the 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles measures the oxygen in the exhaust and reports it to the engine computer. This sensor goes in the downstream position.

    • Laser-welded stainless housing resists corrosion
    • PTFE filter blocks contaminants under harsh engine conditions
    • Dual-layer protection shields the ceramic element for fast, reliable response times
    • Aluminum oxide trap layer designed to protect the ceramic element from silicone and lead poisoning
    • Heated narrow-band sensor with 4 wires

    Quick facts

    • Part: DENSO Auto Parts 234-8012 oxygen sensor
    • Fits: 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles
    • Position: Downstream
    • Condition: New

    A failing oxygen sensor can show up as a check engine light or a failed emissions test. Those signs alone do not prove the sensor is the problem, since an exhaust leak near it can throw off the readings too.

    Fits

    The 2017-2021 BMW M240i xDrive 6-cylinder 3.0L and the 2017-2020 BMW 440i 6-cylinder 3.0L take one sensor each, and this sensor fits many other BMW models too. If your BMW is not named here, look it up in the "Vehicles it fits" section. This listing is a single sensor. It is built and tested to OE standards for an exact-replacement, first-time fit.

    Specifications

    Fit and size

    • Position: Downstream
    • Engine: L6-3.0L
    • Quantity per vehicle: 1
    • Thread diameter: 0.705 in
    • Wiring harness length: 20.71 in
    • Mounting type: Threaded

    Build and materials

    • Sensor type: Heated, narrow-band
    • Wires: 4
    • Connector: Male
    • Fit type: Specific (direct fit)
    • Condition: New
    • Country of origin: United States

    This part cross-references / interchanges with the following part numbers:

    11788611294, 25768, 250-241214, 350-34673

    Frequently Asked Questions

    Will the DENSO Auto Parts 234-8012 work on a 2017-2020 BMW 440i 6-cylinder 3.0L?

    Yes. DENSO Auto Parts 234-8012 is listed for the 2017-2020 BMW 440i 6-cylinder 3.0L, which takes one. For other BMW models, look in the "Vehicles it fits" section.

    Is the DENSO 234-8012 an upstream or downstream oxygen sensor?

    This 234-8012 sensor is a downstream oxygen sensor. It is a heated, narrow-band sensor with four wires and a male connector.

    How long is the wiring harness on this oxygen sensor?

    The wiring harness is 20.71 inches long. The sensor mounts by threading in, with a thread diameter of 0.705 inches.

    How can I tell if a downstream oxygen sensor is going bad?

    A check engine light or a failed emissions test can be signs. A shop can read the stored codes and test the sensor, so you don't have to guess.

    What does the aluminum oxide trap layer on this DENSO Auto Parts oxygen sensor do?

    On DENSO Auto Parts 234-8012, the aluminum oxide trap layer is designed to protect the ceramic element from silicone and lead poisoning. A PTFE filter also blocks contaminants.

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