Enter Vehicle Year Make Model

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

2003 Chevrolet Trailblazer EXT Oxygen Sensors

What year is your
Free Same Day Shipping

2003 Chevrolet Trailblazer EXT Oxygen Sensors

Filter Results
  • Notify When Available

    VIDEO

    O2 Oxygen Sensor

    Replaces O2 Oxygen Sensor TRQ OSA61319

    27 reviews
    Brand: TRQ - OSA61319

    $40.95
    Save 15%
    List $47.95 Save $7.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor

    Replaces 2003 Chevrolet Trailblazer EXT L6 4.2L Upstream O2 Oxygen Sensor TRQ OSA61214

    7 reviews
    Brand: TRQ - OSA61214

    $41.95
    Save 13%
    List $47.95 Save $6.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor

    Replaces 2003 Chevrolet Trailblazer EXT L6 4.2L Downstream O2 Oxygen Sensor TRQ OSA61247

    4 reviews
    Brand: TRQ - OSA61247

    $46.95
    Save 10%
    List $51.95 Save $5.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    00-08 Buick; Chevy; GMC; Pontiac; Saturn Multifit 4 Wire Oxygen Sensor

    Replaces O2 Oxygen Sensor TRQ OSA61291

    6 reviews
    Brand: TRQ - OSA61291

    $40.95
    Save 9%
    List $44.95 Save $4.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor - Delphi

    Replaces 2003 Chevrolet Trailblazer EXT L6 4.2L Rear O2 Oxygen Sensor Delphi ES20113

    2 reviews
    Brand: Delphi - ES20113

    $47.95
    Save 51%
    List $97.95 Save $50.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    Kit image

    Replaces O2 Oxygen Sensor TRQ OSA61654

    3 reviews
    Brand: TRQ - OSA61654

    • Includes: Installation Tool
    • Kit Includes: (1) O2 Oxygen Sensor
    • Kit Includes: (1) Heavy Duty Oxygen Sensor Install Socket

    Out of Stock

    $ 56.95

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor - 4 Wire- 250-24836 (Walker)

    Replaces O2 Oxygen Sensor Walker Products 250-24836

    Brand: Walker Products - 250-24836

    $33.45
    Save 61%
    List $84.95 Save $51.50

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor

    Replaces 2003 Chevrolet Trailblazer EXT L6 4.2L Upstream O2 Oxygen Sensor Walker Products 250-24355

    Brand: Walker Products - 250-24355

    $59.95
    Save 33%
    List $88.95 Save $29.00

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

  • Notify When Available

    VIDEO

    O2 Oxygen Sensor - Delphi

    Replaces 2003 Chevrolet Trailblazer EXT V8 5.3L Rear O2 Oxygen Sensor Delphi ES20094

    1 reviews
    Brand: Delphi - ES20094

    Out of Stock

    $ 51.95

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

    Guaranteed to Fit 2003 Chevrolet Trailblazer EXT

Close



Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.

Go To Top
2003 Chevrolet Trailblazer EXT Oxygen Sensors filter
Specify your vehicle

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

If your vehicle isn't listed, close the window to return to search.