Oxygen Sensor for 2008-2009 Chevrolet Impala & More - DENSO 234-4249

$67.99

Vehicles this part fits

    Part number: 234-4249
    UPC: 042511117037
    Condition: New
    Weight: 0.26 LBS
    Item Package Quantity: 1
    $67.99
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    DENSO Auto Parts Oxygen Sensor P/N:234-4249
    DENSO Auto Parts Oxygen Sensor P/N:234-4249
    $67.99
    $67.99

    DENSO Auto Parts 234-4249 oxygen sensor for the 2008-2009 Chevrolet Impala V8 5.3L and other vehicles senses the oxygen level in the exhaust and reports it to the engine computer. This DENSO Auto Parts oxygen sensor goes in the downstream position and is a direct-fit replacement.

    • 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 is designed to protect the ceramic element from silicone and lead poisoning
    • Heated narrow-band sensor with 4 wires

    Quick facts

    • Part: DENSO Auto Parts 234-4249 oxygen sensor
    • Fits: the 2008-2009 Chevrolet Impala V8 5.3L and other vehicles
    • Position: Downstream
    • Condition: New

    A worn oxygen sensor can show up as a check engine light, rougher running or lower fuel economy. An exhaust leak, a misfire or a fuel delivery problem can be behind those signs too, so find the cause before you buy a sensor.

    Fits

    This listing is one sensor. The vehicles it fits include the 2008-2009 Chevrolet Impala V8 5.3L, the 2008-2009 Buick LaCrosse V8 5.3L and the 2008-2009 Buick Allure V8 5.3L, and each takes one.

    Specifications

    Fit and size

    • Position: downstream
    • Quantity per vehicle: 1
    • Thread diameter: 0.708 in
    • Wiring harness length: 11.02 in
    • Number of wires: 4
    • Connector: female

    Build and materials

    • Sensor type: heated, narrow-band
    • Mounting type: threaded
    • Housing: laser-welded stainless
    • Condition: new
    • Country of origin: United States

    Product information is for general reference and may contain errors. See our Disclaimer.

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

    213-4252, 15132, ES20352, 12615124, 21023, 250-24703, 350-34483

    Frequently Asked Questions

    Does this Chevy Impala oxygen sensor fit a 2008-2009 Chevrolet Impala V8 5.3L?

    Yes, DENSO Auto Parts 234-4249 fits the 2008-2009 Chevrolet Impala V8 5.3L, and it takes one. If your car is not named here, find it in the "Vehicles it fits" section.

    Can I use this Buick LaCrosse oxygen sensor on a 2008-2009 Buick LaCrosse V8 5.3L?

    Yes. This downstream sensor fits the 2008-2009 Buick LaCrosse V8 5.3L, and that car takes one.

    How many wires does the DENSO 234-4249 oxygen sensor have?

    It has four wires, a female connector and an 11.02 in wiring harness. DENSO 234-4249 is a heated, narrow-band sensor.

    Which signs can show up when a downstream oxygen sensor wears out?

    A check engine light, rough running or lower fuel economy can show up. A shop can test the sensor with the engine running to confirm.

    Does this oxygen sensor have a filter or protective layers?

    Yes, a PTFE filter blocks contaminants, an aluminum oxide trap layer is designed to protect the ceramic element from silicone and lead poisoning, and the housing is laser-welded stainless.

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