Rear Air to Coil Spring Suspension Conversion Kit with Shock Absorbers - Heavy Duty

Key Features:
  • Limited Lifetime Warranty
  • Saves You Money Compared To OEM/Dealer Prices
  • Installation Instructions Included
  • Brand NEW

Order Includes:
Order Includes: 2 Rear Heavy Duty Coil Springs, 2 Rear Shocks, 4 Insulators

Part Number 41F-30-HD-KIT
Condition New
Ships Within 1-2 Business Days
This item qualifies for FREE UPS Ground Shipping
Suncore’s Rear Air Spring to Coil Spring Conversion Kit Part 41F-30-HD-KIT for your Crown Victoria, Grand Marquis or Town Car is the perfect upgrade for an aged and failing air suspension system.
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Lincoln Automotive: 3W1Z18125CA
Ford: 3W7Z18124CA
Lincoln Automotive: 3W1Z18124AA
Lincoln Automotive: 3U2Z18124BG
Ford: 3W7Z18124AA
Mercury: 3W7Z18125DA
Mercury: 3W7Z18124AA
Ford: 3W7Z18125FA
Ford: 3W7Z18124BA
Ford: 3W7Z18125DA
Mercury: 3W7Z18124BA
Lincoln Automotive: 4W1Z18125AA
Ford: 3W7Z18124GA
Mercury: 4W7Z18125BA
Mercury: 3W7Z18125EA
Ford: 4W7Z18124AA
CARDONE New: 4J-1010K
Ford: 4W7Z18125DA
Ford: 3W7Z18125EA
Ford: 4W7Z18124BA
Mercury: 4W7Z18124AA
Lincoln Automotive: 6W7Z18124C
Ford: 3W7Z18125GA
Ford: 4W7Z18124CA
Mercury: 4W7Z18124BA
Mercury: 6W7Z18124C
Lincoln Automotive: 4W1Z18124AA
Ford: 4W7Z18124DA
Lincoln Automotive: 4W7Z18124CA
Ford: 6W7Z18124C
Mercury: 4W7Z18124DA
Ford: 4W7Z18125AA
Mercury: 4W7Z18124CA
Mercury: 6W7Z18124D
Ford: 6W7Z18124A
Ford: 4W7Z18125BA
Mercury: 4W7Z18125AA
Ford: 6W7Z18124D
Ford: 6W7Z18125B
Mercury: 4W7Z18125CA
Ford: 4W7Z18125CA
Ford: 7W7Z18124D
Ford: 6W7Z18125C
Mercury: 4W7Z18125DA
Lincoln Automotive: 6W1Z18124A
Mercury: 7W7Z18125B
Mercury: 7W1Z18124A
Ford: 6W1Z18125A
Mercury: 6W1Z18125A
Ford: 7W7Z18125B
Ford: 7W1Z18125A
Mercury: 6W7Z18124A
Ford: 6W7Z18124B
Lincoln Automotive: 8W1Z18125B
Mercury: 7W1Z18125E
Mercury: 6W7Z18124B
Mercury: 6W7Z18125D
Mercury: 6W7Z18125B
Mercury: 7W7Z18124A
Ford: 6W7Z18125D
Ford: 7W1Z18124A
Lincoln Automotive: 7W1Z18124A
Ford: 7W7Z18125C
Ford: 7W7Z18124A
Lincoln Automotive: 7W1Z18125A
Lincoln Automotive: 7W7Z18124C
Mercury: 7W7Z18125D
Ford: 7W7Z18125D
Mercury: 7W1Z18125A
Ford: 9W1Z18124A
Ford: BW7Z18125A
Mercury: AW7Z18125BA
Ford: 7W1Z18125E
Lincoln Automotive: BW1Z18125A
Ford: BW7Z18125B
Mercury: BW1Z18125A
Monroe Shocks & Struts: 90004
Ford: BW7Z181125A
Sensen Shocks & Struts: CS3000
Mercury: BW7Z18124A
Lincoln Automotive: 9W1Z18124A
Lincoln Automotive: FOAZ18125A
Lincoln Automotive: E5VY18125F
Lincoln Automotive: FOAZ18125B
Mercury: 9W1Z18124A
Ford: XW3Z18125AA
Mercury: XW3Z18125AA
Ford: BW1Z18125A
Mercury: BW7Z181125A
Ford: BW7Z18124A
Lincoln Automotive: BW7Z18124B
Mercury: BW7Z18125A
Arnott Industries: C-2615
Westar: CK-7841WS
Lincoln Automotive: E5VY18125E
Lincoln Automotive: NOT18125AV
WARNING CA Proposition 65
This kit will keep the car at factory height while providing a smooth car ride. You will be saving Time and Money by purchasing this complete kit. The Town Car conversion kit will eliminate the air suspension problem forever. How to disable the air suspension light is provided in the instructions. Gas Shocks should be replaced every 50,000 miles and are included with this kit. For safety reasons your Gas Shocks should be maintained for these periods. This kit comes with a **Limited Lifetime Warranty** against any manufacturer defects and included with your purchase you will find easy to follow installation instructions.


Suncore Industries was established in 2000 and have been a member of the Automotive Parts Rebuilders Association (APRA) ever since. Our mission began with rebuilding air suspension components and moved quickly into offering better solutions with conventional suspension conversion kits to give our customers the longevity they can rely on.

The most common reason for an air strut failure is due to dry rotting of the air bag. This is something that happens over time, the air bag starts to deteriorate and causes leaks, when this happens the air bag can no longer hold air pressure. A leaking air bag can cause the strut it fits over to fail as well. The second factor of an air strut failure is the strut itself. The strut is pressurized with fluid, and if the strut begins to fail it will no longer have the same pressure to hold the vehicle. If this system begins to fail one visible sign will be that your vehicle will be lower than factory height. If Air Struts are not replaced on time, it will cause an Air Suspension Compressor Failure.

We are happy to offer free UPS ground shipping on all orders to the lower 48 States.

Unfortunately since these parts are quite heavy and large we cannot offer free shipping to Puerto Rico, Hawaii nor Alaska. (We do offer shipping to these areas, but it will be based upon UPS quotations. Please feel free to contact us directly.)

We do not ship to P.O. Boxes nor APO's as UPS will not deliver to these locations.

If you would prefer a different or expedited shipping option, please contact us and we will be glad to work around your needs.

Business hours are Monday to Friday 9am to 5pm EST.

We ship UPS Ground by default
Same-day shipping will be provided for orders placed before 2PM EST
Orders after 2PM EST will be shipped the next business day
Orders on the weekend will be shipped the next business day
Orders on a holiday will be shipped the next business day
Tracking will be provided immediately to the email provided in your order
Signature required is mandatory on any order over $400
Signature required may be requested on orders below $400

Complete strut assembly free shipping ups ground
Please refer to this chart for estimated transit times. We are shipping out of the warehouse in Boynton Beach, Florida zip code 33426

4 out of 5 stars
2 total ratings
Verified Buyer
It's good that this kit comes with everything needed, however the picture is pretty deceptive. The coil springs in the picture are the variable rate coils, but what you actually get is constant rate springs, which is not what i expected. Hopefully they are up to the task.
Reviewed on 9/9/2020
Verified Buyer
nice product, great service.
Reviewed on 5/25/2020
Showing comments 1-2 of 2

Rear Air to Coil Spring Suspension Conversion Kit with Shock Absorbers - Heavy Duty

Does suncore sell lowering springs for the 2004 Mercury Marauder? I like this kit a lot just wondering if you guys have springs where I could lower it about 1.5”.

Customer Service

Hi Aaron, unfortunately we do not sell lowering kits. I do apologize for the inconvenience!