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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.
Part of our warranty process includes reviewing evidence of the defect provided by the customer. This is easily accomplished by providing video or images of the defective part so our staff can verify the claim and move forward with the warranty process. This removes the necessity of shipping the part back to our facility at the customer's expense.
WARRANTY:
Moog Premium Steering Components carry a Limited Lifetime Warranty. Moog R-Series Control Arms, Hub Assemblies, and Knuckle Assemblies carry a 3 Year or 36,000 mile Warranty (whichever occurs first). Above warranties are based on customers who own a car, van, SUV or light truck (less than 8,000 lbs. or 3,625 kilograms).
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.
Wearable RUBBER parts are not covered under warranty (Dust boots, bushings, bump stops, etc.)
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.
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.


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.
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.


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.

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MOOG moog-5030
starstarstarstarstar" Excellent product IF YOU BUY FOR THE RIGHT REASON "
Happy with the product.
verified_user Verified Buyer - john gray - . MOOG moog-5030 - 5 out of 5starstarstarstarstar" Very Good "
I tend to use both ES and Moog parts where I can and have always been pleased with quality. It was a shocker after the suspension p;arts were changed as I had no idea the car had dropped over the years. It rides approx 3 inches higher than before both front and rear, but will settle down somewhat after some months of usage. I did not want a lowering kit for the car, OEM no longer available, so went with these (HD for Caprice but will fit Impala SS) Oems were lower in ride height, but what the heck! So far so good and the ride is firm yet compliant especially on highways.
verified_user Verified Buyer - Robin OCarroll - . MOOG moog-5030 - 5 out of 5question_answer Customer Questions and Answers
- Question:
- Will moog-5030 fit my 1964 Oldsmobile Jetstar 1 with a/c?
- Answer:
- Yes, Part Number moog-5030 will fit your 1964 Oldsmobile Jetstar 1 with the air condition option.
- Question:
- What is the spring rate for part number 5030?
- Answer:
- Part number 5030 has a spring rate of 419 lbs per inch.
- Question:
- Will part numbers 5030 and 5419 fit my 95 Chevy impala?
- Answer:
- No, part numbers 5030 and 5419 will not fit the 95 Chevy impala.