Talk to a Mustang Expert
Mon-Thu 8:30a-11p, Fri-Sun 9a-7:30p

Free Shipping on Everything. Seriously. Details

How to Install a Eibach Pro-Kit Springs - Coupe & Convertible on your 2003-2004 Mustang Cobra

Installation Time

4 hours

American Muscle
Shop Parts in this Guide


PRO·KIT - # 3594.140

2003-2004 Ford Mustang Cobra Coupe/Convertible (w/IRS)

NOTES: Read All Instructions Before Beginning Installation

  • Installation of a PRO-KIT Spring set should only be performed by a qualified mechanic experienced in the installation and removal of suspension springs.
  • Use of a hoist is highly recommended and will substantially reduce installation time.
  • Never work on or under a vehicle unless it is properly supported by safety stands and wheels are blocked.
  • PRO-KIT Springs are marked with 001 and 002 (located at the end of the part number) designating front and rear spring respectively.
  • PRO-KIT Springs should be installed with the Eibach Logo right side up. All original stock spring isolators, dampers and tubing should be retained from the stock springs and reused
  • After installation, it is always important to inspect and adjust the following if necessary:
    • Wheel alignment such as camber, caster & toe
    • Tire and/or wheel fender clearance
    • Brake line clearance and attachments
    • Brake anti-locking and anti-skid system sensors
  • Tire Rotation: To increase the life of your tires, it is recommended to rotate your tires every 3,000 miles.


  • After installation, it will be necessary to perform a full vehicle alignment using factory specifications.

Additional Eibach Components Available For Your Car

Eibach KitsPart NumberDescriptionFrontRear
Anti-Roll-Kit3590.320Performance Handling35mm29mm

Bump Stop Trimming Instructions No bumpstop trim needed.

This guide applies to Vehicle years: 2003, 2004 and Submodels: Cobra