About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Our coil spring conversion kit is a simple and inexpensive alternative for vehicles that came equipped with a factory air suspension. Everything necessary to replace the factory air springs with metal coil springs is included and it will install and fit without any special tools or modification to the vehicle.
Attention California Customers:
WARNING: This product can expose you to chemicals including Chromium (Hexavalent Compounds), 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
This part fits
3 vehicles spanning 1990-2011.
Fits these Makes
Select vehicle
Year
Make
Model
Description
1992-2011
Ford
Crown Victoria
Ford Crown Victoria Rear Air Bag to Coil Spring Conversion Kit TRQ SKA63000
1990-2011
Lincoln
Town Car
Lincoln Town Car Rear Air Bag to Coil Spring Conversion Kit TRQ SKA63000
1992-2011
Mercury
Grand Marquis
Mercury Grand Marquis Rear Air Bag to Coil Spring Conversion Kit TRQ SKA63000
Part Interchange
Brand Label
Part Number
Arnott Industries
C-2232
DIY Solutions
SHO00838
Unity Automotive
30-040000-HD
Westar
CK-7800
Unity Automotive
30-540000
This item may be interchangeable with parts from other brands with the above part numbers.
This information is provided only for reference and does not guarantee that the item you are
purchasing is identical to parts with part numbers from the brands listed above.
To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
FREE Shipping is standard on orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii and Alaska.
Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, US Territories, or Canada for this item.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii.
Final shipping costs are available at checkout.
Product Reviews
4.8/ 5
★★★★★★★★★★
20 reviews
5★
80%
4★
15%
3★
5%
2★
0%
1★
0%
Customer photos
★★★★★June 12, 2026
Ok part
It seems like a very nice part, but I am disappointed that it did raise the car back to factory ride height, it fixed a little of the sag from my old springs, but it's still sagging
★★★★★April 8, 2026
Coil spring conversion kit
I love the new coil springs removing the airbags was easy spring install was fast and easy I love them I would recommend these to anybody that is aggravated with their airbags now you never have to worry about them airbags going out the motor going out leaking drove me nuts I love this product
★★★★★February 22, 2026
Great option to fix Air Suspension
Worked great and restored the car's suspension. Air compressor and one bag was shot so this was a great alternative. The video was great but most folks do not have a lift so I found a Lincoln Cont. video that made the job easier. For example, Best to pull the bag down first and then remove the air connection leaving the electric attached. Impossible to get at it from the direction they did without a lift. Also the btm bushing is not needed just the top bushing per the Lincoln video. But great part and video.
★★★★★November 5, 2024
Worked great. Sat a little high even after plenty of break in miles
★★★★★June 24, 2024
Great system lower rubber boot did not fit on the axel car rides great
★★★★★March 20, 2024
Rear Coil Springs
The part fits perfect I have a much smoother ride that I had before I rate this 10/10
★★★★★December 8, 2023
Coil springs 09 Grand Marquis
Was everything I needed
★★★★★August 4, 2023
fit great
★★★★★November 27, 2022
1996 Mercury Grand Marquis-- Install STANDARD CONSTANT rate rear coil springs--PERIOD!!!!
1996 Grand Marquis, with 230,000 miles. when i got it it had air bags, swapped them out with Moog car go coils. ride was very firm , but at the time that is what i wanted to do. they lasted 6 years and then just rode HARD with no bounce. This time I installed the Standard constant rate TRQ springs (SKA6300). So happy with my choice!! car rides normal and the best it has ever felt. Installed new rear sway end links Mevotech (MK8848) . needed to order larger coil insulators. ship one don't fit!
★★★★★November 17, 2022
Quality company
Very happy with quality, price, delivery! It's like being in a new car. I've had it for four years, have needed a few things I bought from you, always happy.
It's a 98 Lincoln with 93K and is my baby, .. Thanks. I recommend your company to any friend who needs parts. Of course your videos are a big help.
Showing 1–10 of 20 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
CharlesDecember 14, 2023
Do I need to change rear g or it onas shocks and coil springs. Or just coil springs only good?
Yes, we do have installation instructions available for this part. Here's a link for that: <a href="https://www.1aauto.com/Ford-Lincoln-Mercury-Rear-Air-Bag-to-Coil-Spring-Conversion-Kit-TRQ-SKA63000/I/1ASRC00007" target="_blank">https://www.1aauto.com/Ford-Lincoln-Mercury-Rear-Air-Bag-to-Coil-Spring-Conversion-Kit-TRQ-SKA63000/I/1ASRC00007</a>
Jean · December 14, 2023
MrAugust 14, 2019
Will they fit a Marauder?
my answer is BETTER.
Walt · December 4, 2021
Showing 1–2 of 2 questions
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