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Vehicle Info Required to Guarantee FitAdd Vehicle

90004C Coil Spring Conversion Kit - Direct Fit, Set of 2

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$314.99Save: $108.00(34%)
Manufacturer #90004C
Vehicle Info Required to Guarantee FitAdd Vehicle


Recommended Use:
OE Replacement
Quantity Sold:
Set of 2
(2) Shock Absorbers, (2) Coil Springs, and Hardware
Replaces OE Number:
C2615, 90004C
Product Fit:
Direct Fit
Lifetime Monroe limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

European Vehicle Parts
Interchange Part Number:
C2615, 90004C

Vehicle Fitment Information

Vehicle Name
Fitment Information
2003 Ford Crown Victoria
All Engines
Except Taxi Package
2003 Lincoln Town Car
All Engines
Sedan, Except Commercial Chassis
2003 Lincoln Town Car
Cartier L
All Engines
Sedan, Except Commercial Chassis
2003 Lincoln Town Car
Executive Protection Series
All Engines
Sedan, Except Commercial Chassis
2003 Mercury Grand Marquis
All Engines
without Police Package, Except Taxi Package
Page 1 of 6 | Showing 1 - 5 of 27 results

Product Information


Rework your air spring suspension into a coil spring system without breaking a sweat with the superior-quality, simple-to-install solution offered by Monroe’s coil spring conversion kit. Founded in 1916, Monroe manufactures top-quality OE replacement shock absorbers, struts and mounts for the automotive aftermarket.

  • Precisely engineered for switching your air suspension with conventional system
  • Premium, sturdy design delivers enduring performance
  • Guaranteed to restore your vehicle’s ride height to optimum level
  • Meticulously formed for direct compatibility
  • No trouble to install
  • Comes with all essential parts, hardware and instructions for complete installation
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

Will this conversion kit work for the rear of my vehicle?Jonathan L.Mar 27, 2024
Best Answer:Hi Jonathan, I'm pleased to assist you. Yes, this conversion kit is designed to work for the rear of a vehicle, converting the factory air suspension to a conventional suspension system. Click the link below to continue ordering our best offer today before the sale ends. I hope this helps and enjoy shopping! <a href="https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPGG4850_CSQA_20240327" target="_blank">https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPGG4850_CSQA_20240327</a>
Grace G.STAFFMar 27, 2024
2009 grand Marquis. Does this kit include instructions on how to disable the 'check air suspension ' message?Rickb K.Feb 18, 2024
Best Answer:Hi Rickb, I'm glad to assist you. No, this doesn't include instructions. If you're interested in this coil spring conversion kit, you can click on the link below for direct ordering to take advantage of our ongoing discount and limited stocks. I hope this helps, and happy shopping. <a href="https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPAE1047_CSQA_20240218" target="_blank">https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPAE1047_CSQA_20240218</a>
Arnel E.STAFFFeb 18, 2024
Do these come already put together?Jimmy B.Sep 24, 2022
Best Answer:Hi Jimmy, thank you for reaching out. This item comes as shown in the photo. This item is ready for installation. You can take advantage of our 30-day post-purchase Price Match guarantee. Click this link to order this part: <a href="https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPAP3648_CSQA_20220924" target="_blank">https://www.carparts.com/coil-spring-conversion-kit/monroe/ts90004c?can=CPAP3648_CSQA_20220924</a> I hope this helps. Enjoy shopping.
Aldrin P.STAFFSep 24, 2022
I want to lower my 2008 ford Crown Victoria Police interceptor 1.5 to 2.0 inches? Do you have a kit for this application available? GaryGary G.May 27, 2021
Best Answer:Hi Gary, I'm glad to assist you. Unfortunately, we currently don't carry lowering kits for the 2008 Ford Crown Victoria models. But we do thank you for inquiring.
Arnel E.STAFFMay 27, 2021
Is replacing the coils all thats needed to convert from air or are there more parts needed?Jeffrey L.Mar 01, 2021
Best Answer:Hello! This kit is all you will need!
Mitchell D.STAFFMar 01, 2021

Customer Reviews

Amazing transformation to my mercury Grand marquis LS. It drives smooth but when you go from air to the Monroe spring conversion kit, I’ve never felt my car ride this smooth sense the day I got it. Never will I ever regret this purchase. Thanks
Bobby B.
Purchased on Mar 25, 2022
Just like the website stated the part was a great fit and overall saved a hell of lot of money ordering here. THANKS CAR PARTS!!
Lakesha L.
Purchased on Sep 16, 2023
Keith J. O.
Purchased on Mar 14, 2024