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MonroePart #: 90004C
Monroe 90004C Air Spring to Coil Spring Conversion Kit - Rear
57 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Air Spring to Coil Spring Conversion Kit, Rear
Fitment: Ford, Lincoln, and Mercury, Crown Victoria, Town Car, and Grand Marquis
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Not what you need? See all Air Spring to Coil Spring Conversion Kit options
Monroe Air Spring to Coil Spring Conversion Kit Overview
The Monroe Air Spring to Coil Spring Conversion Kit 90004C offers a reliable solution for Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis owners looking to replace their air suspension with a coil spring setup. Designed for passive suspension systems, this kit includes all necessary mounting hardware for a straightforward installation.
- Compatible with Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis
- Part number 90004C for precise identification
- Includes mounting hardware for complete installation
- Premium grade components for durability
- Passive suspension type conversion
- Non-adjustable rebound design
Product Line Details: Air Spring to Coil Spring Conversion Kit
The Monroe Air Spring to Coil Spring Conversion Kit line is engineered to provide a direct replacement for air suspension systems by converting them to coil springs. This approach simplifies suspension maintenance and reduces potential air system failures. The 90004C kit is part of this line, offering a premium-grade, passive suspension conversion tailored for select Ford, Lincoln, and Mercury models.
Detailed Product Description
This conversion kit replaces the original air springs with coil springs, eliminating the need for air compressors and related components. The passive design means the suspension does not require electronic adjustment or rebound tuning, making it a practical choice for vehicles like the Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis. The included mounting hardware ensures a secure fit and ease of installation. The premium grade materials used in this kit contribute to long-lasting performance under typical driving conditions.
Common Applications and Problem Solving
- Eliminates air spring leaks and compressor failures
- Reduces maintenance costs associated with air suspension systems
- Improves suspension reliability for aging Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis vehicles
- Addresses uneven ride height caused by failing air springs
- Prevents suspension sag and instability
Installation Notes and Tips
Installation of the Monroe 90004C kit requires removal of the existing air springs and associated components. The included mounting hardware facilitates a secure and proper fit. It is recommended to have the installation performed by a qualified technician familiar with suspension systems on Ford, Lincoln, and Mercury vehicles. After installation, verify proper ride height and suspension function before driving.
Quality Assurance and Warranty
Monroe’s Air Spring to Coil Spring Conversion Kit 90004C is manufactured to premium grade standards, ensuring durability and consistent performance. The kit includes all necessary hardware for installation and is designed specifically for the Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis. Warranty details should be confirmed with the manufacturer or authorized distributor.
This part fits 57 vehicles. Search below:
| 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 |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
C2615
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.