Arnott's Limited Lifetime Warranty

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Vehicle Parts

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Frequently Asked Questions

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Why can't I purchase from your site?

In July of 2016 Arnott Europe transitioned to a dedicated focus on Arnott Authorized Distributors in the EU and ended direct sales to consumers and workshops. Arnott's authorized distributors provide workshops and their customers with a variety of benefits including better pricing, multiple payment options, local warehousing and shipping and easier returns for cores and warranty items.

By selling only through Arnott Authorized Distributors, Arnott Europe is better able to focus on providing superior customer and technical support while also being able to service our distributors better.

Arnott Europe's website continues to offer detailed product information and installation resources but no longer offers its products for sale via the website. Visitors to can easily find a searchable database with listings for Arnott Authorized Distributors located throughout the EU. The distributor listings provide the ability to zoom into the distributor's location on a map as well as click links to the distributor's website, phone number and email address.

If you cannot find a local distributor in your area, please feel free to contact us so that we can help you find one.

What is the Arnott Warranty on Air Suspension parts?

Arnott Europe offers a Limited Lifetime Warranty for European Union customers on Arnott Air Springs, Air Struts, Shocks, Compressors and Conversion Kits. Orders for Arnott products outside of the European Union come with a Limited Two-Year Warranty. Arnott offers a 90-Day Warranty on parts used in commercial vehicles. Improper use or installation is not a manufacturer's defect. Arnott's Warranty is non-transferable.

For complete Warranty details and limitations, please click here.

Will Arnott air suspension parts ride differently from the originals?

No. Arnott air springs are just like the originals. You will not notice any difference in ride quality. Arnott designs its air springs with the same spring rate and load capabilities set by the original manufacturer.

How long do air suspension parts last?

Air springs normally last 90,000 to 160,000 kilometers. Over this time, the rubber bladder dries out, and cracks appear around the bottom piston. Compressors usually wear out because of leaky air springs. However, the computer and height sensors generally last the life of the vehicle.

Why do some of your compressors look different from the original factory part?

While many of Arnott's compressors come from the Original Equipment Supplier they often are not exactly the same as the original compressor. Some Arnott compressors feature improvements to the original design such as different wiring harnesses, brackets and filters. Others may require the re-use of stock mounting hardware or wiring. In some cases the compressor is different because the OE compressor changed supplier. Arnott tests every compressor and includes all of the necessary mounting hardware, accessories and installation instructions and backs its compressors with a Limited Lifetime Warranty in the EU.

Do Arnott products include instructions?

Most Arnott parts have detailed installation manuals which are available for download by visiting These downloadable manuals are available as PDFs in English or can be accessed and translated as a web page using Google Translate. Some parts include Technical Service Bulletins (TSBs) that alert installers of common installation issues they should be aware of. Any product TSBs, along with multi-language instructions for accessing and downloading Arnott's Manuals, will be included with your product. Arnott also has a growing selection of professionally produced Installation Videos that are linked to their products on

Do I have to weld or modify my car to make your coil spring conversion kits fit?

Absolutely not! Arnott conversion kits are designed to bolt directly to your vehicle's suspension. No special tools are necessary to install Arnott conversion kits. Arnott kits come preassembled and ready to bolt in. All Arnott suspension brackets are specifically engineered for your vehicle, and CNC-machined at the Arnott factory in Merritt Island, FL.

Should I replace the air suspension parts or just convert my car to coil springs?

If you like the load-leveling capabilities, or if you tow with your vehicle, then you should repair the air suspension system. If you are tired of replacing the many components of which your air suspension consists, then the coil spring conversion kit should be perfect for you.

Should I replace the air dryer along with my leaky air springs?

Yes. Arnott highly recommends changing the air suspension dryer when you have had a leak in the system. The air dryer becomes saturated with moisture when the compressor is overworked because of a leak in the system. Replacing the air dryer will prolong the life of your air compressor and air spring solenoids.

How do I remove the air lines from my compressor dryer or solenoid?

The air lines are removed from the used part by pushing in on the fitting and pulling out on the air line at the same time. The fitting usually has an orange plastic ring around it. If it does not, that is okay ... simply push in on the brass fitting instead.

What is the difference between your new air shock (AS-2127) and your rebuilt air shock (AS-2411)?

Arnott Remanufactured Rear Air Assisted Shock AS-2708 (NOT AS-2411) has been carefully remanufactured by Arnott. The shock is tested, cleaned, and then rebuilt with a new air spring, seals and heavy duty crimping rings. While the miles are unknown for the remanufactured unit, it is toughly tested and will support the vehicle's auto leveling capabilities and electronic damping system - just like the original.

Arnott Premium Rear Air Shock AS-2127 is built with a brand new shock damper. Arnott then assembles it with a new air spring, seals and heavy duty crimping rings. Damping in the new shock is custom valved and was engineered to provide an excellent ride. The shock’s damping is not electronically controlled by the vehicle's sensors but the air assisted shock still maintains the vehicle's auto leveling functionality.

I installed your shocks (AS-2700, SK-2649, or SK-2671). However, now my ABS and Stability Traction control light is on. What do I do?

There's an ABS sensor along the frame rail near the top mount on the shock. It is possible that this may be disconnected. If it is, plug it back in and the message should go away.

How can I tell if my Mercedes S-Class is equipped with AIRMATIC® or ABC?

AIRMATIC® is a Mercedes trademark for air suspension. ABC stands for Active Body Control. ABC was a rare option on all S-Class models. ABC, however, was standard on all S-600, S-55, S-63, and S-65 models. You can tell which suspension you have by opening the hood of your car and examining the top of the shock absorber.

If the car is equipped with AIRMATIC, you will have obvious air lines leading from the top of the shocks.
Mercedes-Benz AIRMATIC VS ABC Suspension

If your car is equipped with ABC, you will have small black electrical plugs leading into the top of both shocks.

What is ADS? How can I tell if my Mercedes is equipped with ADS suspension?

ADS stands for Active Dampening System. ADS is standard on all GL550 and ML trucks equipped with AIRMATIC. ADS was optional on all other GL models such as the GL320, GL350, and GL450. You can easily check to see if your truck is equipped with ADS by examining the AIRMATIC control buttons located on the dash panel below the Air Conditioning controls. Please see pictures below.
Mercedes-Benz ADS Suspension

How can I tell if my Cadillac is a Concours or an ETC model?

The vehicle should be labeled as such on the rear or side doors.
Cadillac ETC Rear
Cadillac ETC Side Door