Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

2003 GMC C8500 Topkick Parts

What year is your
Free Same Day Shipping

2003 GMC C8500 Topkick

Filter Results
  • Notify When Available

    VIDEO

    Spark Plug Set

    Replaces 2003 GMC C8500 Topkick V8 8.1L 8 Piece Spark Plug Set TRQ SPA02136

    8 reviews
    Brand: TRQ - SPA02136

    • Spark Plug Type: Iridium
    • Quantity: 8 Piece
    • Kit Includes: (8) Spark Plugs
    $56.95
    Save 24%
    List $74.95 Save $18.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available

    VIDEO

    Kit image

    Replaces 2003 GMC C8500 Topkick V8 8.1L 8 Piece Ignition Coil Set TRQ ICA61498

    40 reviews
    Brand: TRQ - ICA61498

    • Quantity: 8 Piece
    • Kit Includes: (8) Ignition Coils
    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $181.95
    Save 22%
    List $231.95 Save $50.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available

    VIDEO

    Performance Ignition Coil Set

    Replaces 2003 GMC C8500 Topkick V8 8.1L 8 Piece Performance Ignition Coil Set TRQ Performance ICA71261

    13 reviews
    Brand: TRQ Performance - ICA71261

    • Ignition Coil Style: Square Style
    • Quantity: 8 Piece
    • Kit Includes: (8) TRQ Performance Ignition Coils
    • Ignition Coil Type: Performance
    • Ignition Coil Color: Red
    $234.95
    Save 18%
    List $285.95 Save $51.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available
    Fuel Pump Module Assembly

    Replaces 2003 GMC C8500 Topkick V8 8.1L with 25 or 53 Gallon Tank Fuel Pump Module Assembly TRQ FPA60489

    Brand: TRQ - FPA60489

    $115.95
    Save 14%
    List $134.95 Save $19.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available

    VIDEO

    Ignition Kit

    Replaces 2003 GMC C8500 Topkick V8 8.1L 16 Piece Ignition Kit TRQ ICA71730

    Brand: TRQ - ICA71730

    • Kit Includes: (8) Spark Plugs
    • Quantity: 16 Piece
    • Kit Includes: (8) Ignition Coils
    • Spark Plug Type: Iridium
    $191.95
    Save 28%
    List $267.95 Save $76.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available
    HVAC Blend Door Actuator

    Replaces 2003 GMC C8500 Topkick Left Main Temperature HVAC Blend Door Actuator TRQ HCA40422

    Brand: TRQ - HCA40422
    $34.95
    Save 27%
    List $47.95 Save $13.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available

    VIDEO

    99-07 Buick Cadillac Chevy GMC Hummer Isuzu Ignition Coil (Square Style)

    Replaces 2003 GMC C8500 Topkick V8 8.1L Ignition Coil TRQ ICA61757

    Brand: TRQ - ICA61757

    • Ignition Coil Style: Square Style
    • Ignition Coil Type: Direct Replacement
    • Ignition Coil Color: Black
    $40.95
    Save 13%
    List $46.95 Save $6.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available
    Ignition Kit

    Replaces 2003 GMC C8500 Topkick V8 8.1L 16 Piece Performance Ignition Kit TRQ Performance TKA05946

    1 reviews
    Brand: TRQ Performance - TKA05946

    • Kit Includes: (8) Spark Plugs
    • Quantity: 16 Piece
    • Kit Includes: (8) Ignition Coils
    • Ignition Coil Type: Performance
    • Ignition Coil Color: Red
    • Spark Plug Type: Iridium
    $263.95
    Save 19%
    List $323.95 Save $60.00

    Guaranteed to Fit 2003 GMC C8500 Topkick

    Guaranteed to Fit 2003 GMC C8500 Topkick

  • Notify When Available

    VIDEO

    Interior Trim Removal Kit

    Interior Trim Removal Kit

    85 reviews
    Brand: TRQ - TLK01001
    $34.95
    Save 3%
    List $35.95 Save $1.00
  • Notify When Available

    VIDEO

    Inner Tie Rod Tool

    Heavy Duty Inner Tie Rod Tool

    185 reviews
    Brand: TRQ - TLK01002

    • Socket Drive: 3/8 in. Drive
    • Product Grade: Heavy Duty
    $23.95
1

...

1 2 3 4 5

...

26
Close



GMC is a registered trademark of General Motors Company. 1A Auto is not affiliated with or sponsored by GMC or General Motors Company. 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.