Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

2004 Audi A4 Fuel & Emissions

What year is your
Free Same Day Shipping

2004 Audi A4 Fuel & Emissions

Filter Results
  • Notify When Available

    VIDEO

    Vapor Canister Purge Solenoid Valve

    Replaces 2004 Audi A4 Vapor Canister Purge Solenoid Valve TRQ EVA47789

    Brand: TRQ
    - EVA47789
    $23.95
    Save 33%
    List $35.95 Save $12.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 Vapor Canister Purge Solenoid Valve TRQ EVA47789

    VIDEO

    Vapor Canister Purge Solenoid Valve
    Brand: TRQ - EVA47789
    $23.95
    Save 33%
    List $35.95 Save $12.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available

    VIDEO

    Vapor Canister Purge Solenoid Valve

    Replaces 2004 Audi A4 Vapor Canister Purge Solenoid Valve TRQ EVA47788

    Brand: TRQ
    - EVA47788
    $28.95
    Save 19%
    List $35.95 Save $7.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 Vapor Canister Purge Solenoid Valve TRQ EVA47788

    VIDEO

    Vapor Canister Purge Solenoid Valve
    Brand: TRQ - EVA47788
    $28.95
    Save 19%
    List $35.95 Save $7.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    O2 Oxygen Sensor

    Replaces O2 Oxygen Sensor TRQ OSA60643

    1 reviews
    Brand: TRQ
    - OSA60643

    $47.95
    Save 17%
    List $57.95 Save $10.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces O2 Oxygen Sensor TRQ OSA60643

    O2 Oxygen Sensor
    1 reviews
    Brand: TRQ - OSA60643
    $47.95
    Save 17%
    List $57.95 Save $10.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    13-17 Mazda; Scion; Toyota Oxygen Sensor

    Replaces O2 Oxygen Sensor TRQ OSA61714

    Brand: TRQ
    - OSA61714

    $71.95
    Save 13%
    List $82.95 Save $11.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces O2 Oxygen Sensor TRQ OSA61714

    13-17 Mazda; Scion; Toyota Oxygen Sensor
    Brand: TRQ - OSA61714
    $71.95
    Save 13%
    List $82.95 Save $11.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available

    VIDEO

    Electric Air Pump

    Replaces Electric Air Pump Pierburg 7.22738.08.0

    Brand: Pierburg
    - 7.22738.08.0

    $384.95
    Save 33%
    List $572.95 Save $188.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces Electric Air Pump Pierburg 7.22738.08.0

    VIDEO

    Electric Air Pump
    Brand: Pierburg - 7.22738.08.0
    $384.95
    Save 33%
    List $572.95 Save $188.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    Mass Air Flow Sensor

    Replaces 2004 Audi A4 V6 3.0L Mass Air Flow Sensor Hitachi Automotive MAF0036

    Brand: Hitachi Automotive
    - MAF0036

    $164.95
    Save 31%
    List $238.95 Save $74.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 V6 3.0L Mass Air Flow Sensor Hitachi Automotive MAF0036

    Mass Air Flow Sensor
    Brand: Hitachi Automotive - MAF0036
    $164.95
    Save 31%
    List $238.95 Save $74.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    Fuel Pump Module Assembly - Delphi

    Replaces 2004 Audi A4 Fuel Pump Module Assembly Delphi FG2082

    Brand: Delphi
    - FG2082

    $263.95
    Save 48%
    List $507.95 Save $244.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 Fuel Pump Module Assembly Delphi FG2082

    Fuel Pump Module Assembly - Delphi
    Brand: Delphi - FG2082
    $263.95
    Save 48%
    List $507.95 Save $244.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    MAP Sensor - Delphi

    Replaces 2004 Audi A4 L4 1.8L MAP Sensor Delphi PS10159

    Brand: Delphi
    - PS10159

    $119.95
    Save 49%
    List $235.95 Save $116.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 L4 1.8L MAP Sensor Delphi PS10159

    MAP Sensor - Delphi
    Brand: Delphi - PS10159
    $119.95
    Save 49%
    List $235.95 Save $116.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    Mass Air Flow Sensor - Delphi

    Replaces 2004 Audi A4 V6 3.0L Mass Air Flow Sensor Delphi AF10149

    Brand: Delphi
    - AF10149

    $136.95
    Save 49%
    List $267.95 Save $131.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 V6 3.0L Mass Air Flow Sensor Delphi AF10149

    Mass Air Flow Sensor - Delphi
    Brand: Delphi - AF10149
    $136.95
    Save 49%
    List $267.95 Save $131.00

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

  • Notify When Available
    Fuel Injection Pressure Regulator - Delphi

    Replaces 2004 Audi A4 V6 3.0L on Fuel Rail Fuel Injection Pressure Regulator Delphi FP10312

    Brand: Delphi
    - FP10312

    Out of Stock

    $ 129.95

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

    Replaces 2004 Audi A4 V6 3.0L on Fuel Rail Fuel Injection Pressure Regulator Delphi FP10312

    Fuel Injection Pressure Regulator - Delphi
    Brand: Delphi - FP10312

    Out of Stock

    $ 129.95

    Guaranteed to Fit 2004 Audi A4

    Guaranteed to Fit 2004 Audi A4

Close



Audi is a registered trademark of Audi AG. 1A Auto is not affiliated with or sponsored by Audi or Audi AG. See all trademarks.
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
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.