• coil-springs-buick-regal-03-04-moog variable rate coil springs - front

variable rate coil springs - front

Manufacturer: MOOG
Part Number: coil-springs-buick-regal-03-04-moog
Rating 80 Reviews


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Price: $0.01

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Fitmentvariable rate coil springs - front coil-springs-buick-regal-03-04-moog fits these vehicles:
  • Moog fulfills their warranty through their individual dealers. That means that in order to receive warranty support, you will have to refer back to the original dealer you purchased the part from. Be sure to check the dealer's warranty support before you buy the part to make sure that they will properly support the warranty. If a dealer will only refer you back to the manufacturer in order to receive warranty support, then you may not actually have any warranty at all.


    Moog Premium Steering Components carry a Limited Lifetime Warranty. Moog R-Series Control Arms, Hub Assemblies, and Strut Assemblies carry a 3 Year Warranty.

    Moog warranties their parts to be free of defects in materials and/or workmanship during these timeframes as measured from the date of purchase.

    If a Moog part should fail due to materials or manufacturing defect while under warranty, we will provide a replacement of the part upon return of the defective part.

Moog's Coil Springs

Designed to be more than OE replacements, Moog's coil springs come with a variety of shapes and ends. This selection, combined with Moog's lifetime warranty handled right here at DST, lends security to whichever choice you might make. While they are certainly higher quality than the OE springs, each of Moog's coil springs were designed to still have the same spring rate. Having the same spring rate allows for an easier install and a more accurate restoration for your vehicle's ride.

End Type

Coil Springs have three types of ends: Square, Tangential and Pigtail. It is important that you select a coil spring that matches BOTH your end types, otherwise the coil spring won't fit. Your OE coil spring could have the same type ends, or a combination of both.

Type 1: Squared

With a Squared end, the final coil is bent back to touch the coil before it. The easiest way to know if you have a squared end is to stand the coil spring straight up. A squared end will let the spring sit flat on the ground and stay standing.

Moog Universal Coil Springs Squared

Type 2: Tangential

A Tangential end looks like it would just keep on going forever if the spring continued. The last coil is not bent back and it is not the pigtail (see below). Instead, the tangential coil spring looks as though a normal coil was just cut, otherwise it would have kept winding on forever. If you tried to stand it up straight, it would fall.

Moog Universal Coil Springs Squared

Type 3: Pigtail

The Pigtail is probably the easiest to identify. Its defining characteristic is the pig tail shape at the end. The final coil is squared off, but is a much smaller diameter than the rest of the spring.

Moog Universal Coil Springs Squared

Spring Type

Moog offers two types of springs for a universal fitment: Constant Rate and Variable Rate.

Constant Rate

Moog Constant Rate coil springs return your vehicle to the original specifications. The rate at which the spring compresses and rebounds remains constant regardless of the amount of load on the spring. These coil springs are heat treated, have a weather resistant finish and use a urethane protective tube.

Moog Universal Coil Springs Bar Diameter

Variable Rate

Moog Variable Rate coil springs can be used as an original replacement or an upgrade to carry heavier loads. The resistance changes as the spring compresses, becoming progressively stiffer as the load on the springs increase. The springs include a "comfort range" with tightly spaced coils to give a smooth ride, and include a "load range" with widely spaced coils to minimize deflection and maintain chassis height when the vehicle load increases.

Moog Universal Coil Springs Bar Diameter

Product Reviews for MOOG Front Coil Springs

Still goin strong!
5 out of 5 - Review 1 Year Later No problems
Thomas Childs - . MOOG moog-st8547
Sorry for the late response in providing a review of my strut assembly. Im very happy to have bought these from Suspension.com. The quality of the parts are extremely great and Im more than satisfied with my purchase. \n\nThank you and I will recommend these to a friend 100%
5 out of 5 - Review 1 Year Later
Elvis Guzman - . MOOG moog-st8550
My car rides like new! Thanks for your help.
5 out of 5 - Excellent
Richard Gruszka - . MOOG moog-st8540
The spring height has drop about 3/8 in on both new struts. Editor"s Note: All springs will settle over time. This not unusual.
4 out of 5 - Review 1 Year Later
Gerald Winkler - . MOOG moog-st8597l
My truck is now back to the orginial smooth ride like it was when purchased in 2011.
5 out of 5 - Easy install and new vehicle ride restored.
James C Murray - . MOOG moog-st8606
Very satisfied with product. Good replacement for oems.
5 out of 5 - Review 2 Years Later
William Aspinwall - . MOOG moog-st8606
Replaced the originals with Moog. Everything and more that was expected.
5 out of 5 - Review 1 Year Later
Michael Shelburn - . MOOG moog-st8547
Bearing plate on driver side failed within 14 months, and less than 8,000 miles. I would not recommend this strut if you like the shape your hood is in.
2 out of 5 - Poor quality
Joseph Kiefel - . MOOG moog-st8500
Super easy installation. Only took 1.5 hours start to finish and a perfect fit.
4 out of 5 - Review 1 Year Later
Stevenbur - . MOOG moog-st8590l
I have been very happy With this decision they handle bumps well they are quiet very nice ride car feels very stable !
5 out of 5 - They look very well made !
Melissa Grider - . MOOG moog-st8552r

Fitment for coil-springs-buick-regal-03-04-moog