2003 BMW 525i Engine Parts


  • Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor Pair

    • Engine Displacement (Metric): L6 2.5L
    • Oxygen Sensor Location: Upstream
    • Quantity: Pair

    Ships Same Day for orders placed by 4 P.M. ET

    $49.95
    Save 30%
    List: $70.95 Save: $21.00
    Part #: 1AEEK00312

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    2003 BMW 525i

    2003 BMW 525i Downstream O2 Oxygen Sensor

    Ships Same Day for orders placed by 4 P.M. ET

    $29.95
    Save 33%
    List: $44.95 Save: $15.00
    Part #: 1AEOS00169

  • Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor

    Ships Same Day for orders placed by 4 P.M. ET

    $29.95
    Save 33%
    List: $44.95 Save: $15.00
    Part #: 1AEOS00110

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    2003 BMW 525i

    2003 BMW 525i Mechanical Alternator Serpentine Belt Tensioner with Pulley

    Ships Same Day for orders placed by 4 P.M. ET

    $37.95
    Save 38%
    List: $60.95 Save: $23.00
    Part #: 1AEBT00036

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    2003 BMW 525i

    2003 BMW 525i Engine Oil Level Sender

    Ships Same Day for orders placed by 4 P.M. ET

    $24.95
    Save 44%
    List: $44.95 Save: $20.00
    Part #: 1AZMX00128

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    2003 BMW 525i

    2003 BMW 525i Serpentine Belt Idler Pulley

    Ships Same Day for orders placed by 4 P.M. ET

    $23.95
    Save 33%
    List: $35.95 Save: $12.00
    Part #: 1AEIP00024

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    2003 BMW 525i

    2003 BMW 525i Crankcase Breather Hose

    Ships Same Day for orders placed by 4 P.M. ET

    $20.95
    Save 42%
    List: $35.95 Save: $15.00
    Part #: 1AEMX00046

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    2003 BMW 525i

    2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor with Install Tool

    Ships Same Day for orders placed by 4 P.M. ET

    $37.95
    Save 36%
    List: $58.95 Save: $21.00
    Part #: 1AEEK00677

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    2003 BMW 525i

    2003 BMW 525i Coolant Bleeder Screw

    Ships Same Day for orders placed by 4 P.M. ET

    $17.95
    Save 28%
    List: $24.95 Save: $7.00
    Part #: 1AHCM00002

  • Walker Products

    Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor Pair Walker Products 250-24611

    • Engine Displacement (Metric): L6 2.5L
    • Oxygen Sensor Location: Upstream
    • Quantity: Pair

    Ships Same Day for orders placed by 4 P.M. ET

    $111.95
    Save 35%
    List: $170.95 Save: $59.00
    Part #: WKEEK00001

  • Dorman

    Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i Crankcase Breather Hose Dorman 46045

    Ships Same Day for orders placed by 4 P.M. ET

    $27.95
    Save 40%
    List: $46.95 Save: $19.00
    Part #: DMEMX00022

  • Walker Products

    Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor Walker Products 250-24611

    Ships Same Day for orders placed by 4 P.M. ET

    $53.95
    Save 43%
    List: $94.95 Save: $41.00
    Part #: WKEOS00079

  • Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i Mechanical Serpentine Belt Tensioner with Pulley 3 Piece Set

    • Vehicle Pulley Type: Mechanical
    • Quantity: 3 Piece Set
    $83.95
    Save 34%
    List: $127.95 Save: $44.00

    Out of Stock

    Part #: 1AEEK00697

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    2003 BMW 525i

    2003 BMW 525i Aluminum Heater Hose Outlet Pipe

    • Material: Aluminum
    $74.95
    Save 29%
    List: $104.95 Save: $30.00

    Out of Stock

    Part #: 1ARHU00031

  • Guaranteed to Fit Your

    2003 BMW 525i

    2003 BMW 525i Mechanical Air Conditioning Serpentine Belt Tensioner with Pulley
    $56.95
    Save 35%
    List: $86.95 Save: $30.00

    Out of Stock

    Part #: 1AETB00109
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