Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

2003 Peterbilt 378 Fuel Sending Units

What year is your
Free Same Day Shipping

2003 Peterbilt 378 Fuel Sending Units

Filter Results
  • Notify When Available

    VIDEO

    Heavy Duty Truck Universal Fuel Level Sending Unit Kit (Dorman)

    Replaces 2003 Peterbilt 378 Fuel Tank Sending Unit Dorman Help 55818

    9 reviews
    Brand: Dorman Help - 55818
    $46.45
    Save 31%
    List $66.95 Save $20.50

    Guaranteed to Fit 2003 Peterbilt 378

    Guaranteed to Fit 2003 Peterbilt 378

  • Notify When Available
    87-11 All Peterbilt Models (w/26 Inch Diam Tank) Fuel Tank Sending Unit w/Gasket

    Replaces 2003 Peterbilt 378 with 26 Inch Diameter Fuel Tank Fuel Tank Sending Unit Dorman HD Solutions 285-5401

    Brand: Dorman HD Solutions - 285-5401
    $179.95
    Save 25%
    List $239.95 Save $60.00

    Guaranteed to Fit 2003 Peterbilt 378

    Guaranteed to Fit 2003 Peterbilt 378

  • Notify When Available
    87-11 All Peterbilt Models (w/23 Inch Diam Tank) Fuel Tank Sending Unit w/Gasket

    Replaces 2003 Peterbilt 378 with 23 Inch Diameter Fuel Tank Fuel Tank Sending Unit Dorman HD Solutions 285-5402

    Brand: Dorman HD Solutions - 285-5402

    Out of Stock

    $ 165.45

    Guaranteed to Fit 2003 Peterbilt 378

    Guaranteed to Fit 2003 Peterbilt 378

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
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.