Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

2003 Kenworth K300 Parts

What year is your
Free Same Day Shipping

2003 Kenworth K300

Filter Results
  • Notify When Available
    180pc Viton O-Ring Assortment

    O-Ring Assortment 180 Piece Kit

    Brand: Performance Tool - W5239

    • Includes: Storage Case
    • Quantity: 180 Piece Kit
    • Material: Viton
    $30.95
    Save 34%
    List $46.95 Save $16.00
  • Notify When Available

    VIDEO

    3 pc 9 In Brush Set - Plastic

    Cleaning Brush 3 Piece Set

    1 reviews
    Brand: Performance Tool - 1449

    • Kit Includes: (1) Brass Wire Brush, (1) Plastic Bristle Brush, (1) Stainless Steel Wire Brush
    • Tool Length: 9 in
    • Quantity: 3 Piece Set
    $13.95
    Save 18%
    List $16.95 Save $3.00
  • Notify When Available
    Ford Headlight Adjusting Ratchet Wrench

    Wrench

    7 reviews
    Brand: Lisle - 14540

    • Socket Size: 4mm
    $33.95
    Save 8%
    List $36.95 Save $3.00
  • Notify When Available

    VIDEO

    7 Pc Bearing Race & Seal Dr Set

    7 Piece Bearing Race & Seal Driver Set

    4 reviews
    Brand: Performance Tool - W83020

    • Kit Includes: Includes 6 Common Die Sizes 1.565, 1.75, 1.965, 2.325, 2.47 & 2.555 in
    • Quantity: 7 Piece
    $54.95
    Save 25%
    List $72.95 Save $18.00
  • Notify When Available

    VIDEO

    Hand Vacuum Pump Brake Bleeder

    Vacuum Pump

    Brand: Performance Tool - W87030

    $54.95
    Save 27%
    List $74.95 Save $20.00
  • Notify When Available
    87-11 All Kenworth Models ( w/24.5 Inch Diam Tank) Fuel Tank Sending Unit w/Harness & Gasket

    Replaces 2003 Kenworth K300 with 24.5 Inch Diameter Fuel Tank Fuel Tank Sending Unit Dorman HD Solutions 285-5404

    1 reviews
    Brand: Dorman HD Solutions - 285-5404

    • Includes: Harness

    Out of Stock

    $ 189.95

    Guaranteed to Fit 2003 Kenworth K300

    Guaranteed to Fit 2003 Kenworth K300

  • Notify When Available
    RAVEN: Powder-Free, Exam Grade, Fully Textued BLACK Nitrile NON LATEX 6 MIL Gloves 4 Box Kit (M)

    Medium Disposable Gloves Box of 100 4 Box Kit

    Brand: Raven - 1AXXK00015

    • Size: Medium
    • Quantity: Box of 100
    • Glove Material: Nitrile (Powder Free)
    • Glove Thickness: 6 mil
    • Quantity: 4 Box Kit
    $79.95
    Save 30%
    List $113.95 Save $34.00
  • Notify When Available
    96-12 Kenworth, Peterbilt Gas Tank Mtd (41.30 x 4.75 In) Heavy Duty Alum Fuel Tank Step LH = RH (DM)

    Replaces Fuel Tank Step Dorman HD Solutions 157-5403

    Brand: Dorman HD Solutions - 157-5403

    • Dimensions: 41.30 in. x 4.75 in

    Out of Stock

    $ 157.95

    Guaranteed to Fit 2003 Kenworth K300

    Guaranteed to Fit 2003 Kenworth K300

  • Notify When Available
    Brake Spring Washer Tool

    Brake Spring Retainer Tool

    Brand: Performance Tool - W80622

    $20.95
    Save 32%
    List $30.95 Save $10.00
  • Notify When Available
    4 Inch - Square (12 Watt) Spot Beam 4 LED Flush Mount Offroad Work Light PAIR

    High Quality Performance Work Light 2 Piece Set

    Brand: Trail Ridge - TL10072

    • Lighting Size: 4 Inch
    • Lighting Mount Type: Flush Mount
    • Lighting Beam Pattern: Spot Beam
    • Lighting Wattage Rating: 12 Watt
    • Lighting Bulb Count: 4 LED
    • Lighting Usage: Off-Road
    • Product Grade: High Quality
    • Lighting Housing Shape: Square
    • Product Line: Performance
    • Quantity: 2 Piece Set

    Out of Stock

    $ 46.77
1

...

9 10 11 12 13

...

17
Close



Kenworth is a registered trademark of PACCAR Inc. 1A Auto is not affiliated with or sponsored by Kenworth or PACCAR Inc. 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.