4 PCS O2 Oxygen Sensor Upstream & Downstream for BMW 323i 325i X3 X5 E39 E46

: In stock

: Engines - Components

: YITAMotor

- SKU: OX01-T019*2
- High Quality
- Easy Installation
- Direct Replacement
- Strict Quality Control Testing

    $44.99 $79.99


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    Item Description:

    - Type: 4 Wires of Oxygen Sensor
    - Location: Front, Pre-Catalytic position; Rear, Post-Catalytic position
    - Package Include: 4 pcs (two front sensors and two rear sensors)

    How to distinguish the oxygen sensor poisoning?

    1.The oil pollution
    The fuel additive enters the engine to burn
    2. Silicone poisoning
    Silicon compounds exist in some sealing materials as corrosion inhibitors
    3. Antifreeze agent contamination
    The antifreeze leaked from the cylinder head to the engine and burned
    4. Lead poisoning
    Use leaded gasoline. Leaded gasoline damages the sensor

    Key points:

    If there is a problem with the ternary catalyst, replacing the oxygen sensor will not solve the problem of the fault light. If the ternary catalyst has no effect, the data detected by the oxygen sensor will be abnormal

    Please check fitment notes & description for accurate information.

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