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Monroe
Air Spring to Coil Spring Conversion KitMonroe 90004C Air Spring to Coil Spring Conversion Kit - Rear
| Brand | Monroe 90004C |
|---|---|
| Position | Rear |
| Product line | Air Spring to Coil Spring Conversion Kit |
| Fits | Ford, Lincoln, and Mercury · 57 vehicles |
Conversion kit. Converts factory air suspension to a conventional suspension setup.
Premium components. Includes an application-tuned shock or strut, coil spring(s), and hardware.
Mounting hardware included. Everything needed for installation comes in the kit.
Cross-references C2615 for the same application. See all 1.
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Not what you need? See all Air Spring to Coil Spring Conversion Kit options
Monroe Air Spring Conversion Kit 90004C
Restore a conventional rear suspension setup with the Monroe Air Spring to Coil Spring Conversion Kit 90004C. This premium conversion kit replaces factory air suspension components with an application-tuned shock/strut, coil spring(s), and the required mounting hardware for a direct suspension changeover.
Built for rear applications on select Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis models, this kit is a practical solution when the original air suspension system is no longer performing as intended. Monroe 90004C is engineered for a conventional coil spring conversion on vehicles originally equipped with rear air springs.
Key Features
- Air spring to coil spring conversion kit for rear suspension applications
- Premium-grade Monroe suspension components
- Application-tuned shock/strut included
- Coil spring(s) included for conventional suspension conversion
- Mounting hardware included
- Passive design with no adjustable rebound
Product Details
The Monroe Air Spring to Coil Spring Conversion Kit line is intended for drivers who want to replace a factory air suspension system with a conventional spring-and-shock setup. Part number 90004C provides the core components needed to convert the rear suspension on select 2003-2011 Ford Crown Victoria, 2003-2011 Lincoln Town Car, and 2003-2011 Mercury Grand Marquis models, with application notes for specific package exclusions. This part cross-references Monroe Shocks & Struts (e.g., C2615) for the same application.
What This Kit Helps Address
- Rear air suspension faults on Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis models
- Vehicle sagging caused by worn air springs
- Compressor cycling issues related to failing air suspension components
- Uneven rear ride height from aging factory air system parts
- Need for a conventional suspension conversion on air-suspension-equipped vehicles
Installation Notes and Tips
Fits 2003-2011 Ford Crown Victoria, rear, except Taxi Package; requires one kit per vehicle. Fits 2003-2011 Lincoln Town Car, rear, except Commercial Chassis; requires one kit per vehicle. Fits 2003-2011 Mercury Grand Marquis, rear, without Police Package; except Taxi Package; requires one kit per vehicle. Fits 2003-2004 Ford Grand Marquis, rear, without Police Package; except Taxi Package; requires one kit per vehicle.
Verify the vehicle’s rear suspension configuration and package exclusions before ordering. Confirm that the original system is air-spring equipped and match the application notes exactly to avoid fitment issues.
Quality Assurance
Monroe markets this kit as a premium suspension conversion solution with application-specific tuning and included hardware for the listed vehicles. Part number 90004C is built for rear suspension conversion use on the specified applications.
This part fits 57 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Body Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2011 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2011 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2011 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2010 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2010 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2010 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2010 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2009 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2009 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2009 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2008 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2008 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2008 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2008 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2008 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2007 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2007 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2007 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2007 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2007 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Ford | Crown Victoria | LX Sport | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2006 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Ford | Crown Victoria | LX Sport | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Ford | Crown Victoria | S | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Ford | Crown Victoria | Special Edition | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Mercury | Grand Marquis | Limited Edition | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Mercury | Grand Marquis | Ultimate Edition | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2005 | Mercury | Grand Marquis | GSL | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Crown Victoria | LX Sport | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Crown Victoria | S | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Grand Marquis | Equipado | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Ford | Grand Marquis | Base | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2004 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Crown Victoria | Base | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Crown Victoria | S | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Crown Victoria | LX | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Crown Victoria | LWB | — | Rear | Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Grand Marquis | Equipado | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Ford | Grand Marquis | Base | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Lincoln | Town Car | — | Sedan | Rear | Except Commercial Chassis; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Mercury | Grand Marquis | GS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Mercury | Grand Marquis | LS | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| 2003 | Mercury | Grand Marquis | LSE | — | Rear | without Police Package; Except Taxi Package; Requires One Kit Per Vehicle. See Appendix C for Additional Details.; Air Spring to Coil Spring Conversion Kit |
| No rows match your filter. | ||||||
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
C2615