How to prevent the damage of air springs / How to extend the service life of air springs/struts?

We are keenly aware, that the repair of your air suspension parts is neither inexpensive nor desirable. However, what can be done to increase the durability of your parts? Here are a few tips that will help you, perhaps not to avoid the repair altogether, but to at least postpone its due.

An air strut with separable air springs

If your vehicle offers a separable air suspension (Audi Allroad A6 C5, Mercedes-Benz W164, BMW X5), you should regularly (about once a week) lift the car to the maximum position, and remove dirt with a high-pressure cleaner (keep the cleaner at a distance to the air spring about 30 cm/12 inches, otherwise water pressure can damage the air spring). The highest position may vary depending on your model and regulation options. Therefore, please test this by trying the different modes available to you (Sport, comfort, dynamic, off-road) and choose the one that sets your vehicle to the highest position. The dirt will most likely be found under the fold of the pneumatic chambers. If you find a frozen layer of bitumen on the piston guide (the part of a strut on which the air spring is installed), it is recommended to clean it as well. Whenever possible, avoid riding on fresh asphalt, as fresh bitumen mixed with sand immediately results in a build-up of abrasives on the piston and in turn contributes to accelerated wear and tear of the air spring.

A complete air suspension shock

Many cars such as Mercedes W220 or W211 are set up with a complete air strut - shock absorber and air spring visually form a complete spare part. In many cases, you can easily recognize these by the metal cups with which the air spring is tightly mounted. To best avoid any damage, we highly recommend to regularly check the condition of the dust protection seals of the air strut.

What does the manufacturer number (OEM) stand for and why do some products have more than one?

The car manufacturers assign a number for each of their products. With this number you can find the product you are looking for. When the OEM number you are looking for is listed in the respective product information, the product is compatible with your vehicle. You can find the OEM number in the product information field:

Sometimes the car manufacturers assign more than one OEM number for a product. If you can find the OEM number you are looking for in the product information, then the product is compatible with your vehicle.

What is the difference between an air spring and an air strut?

The air spring is a part of the air strut. Some vehicles (e.g. Mercedes ML) allow you to change the air spring separately. At our online shop you have the opportunity to buy either the whole air strut or only the air spring. For some type of vehicles it is not possible to change the air spring separately. In this case the whole air strut should be replaced.

What is the warranty on Aerosus products?

Our products are covered by a 2-year warranty. To return a product, fill in this return form and enclose it in your return package. If the part is defective we will either send you a new product or repair the part. Our Terms and Conditions apply.

What is deposit?

Some of our products are remanufactured, therefore a certain deposit fee is charged in order to maintain supply of the core parts. After you have installed the new part, please send the old part back to us and fill in this return form and enclose it to your return package. After receiving your old part we will refund the deposit amount to your account. Refund payments will only be made, using the same payment method you used to make the initial purchase. Please note that the deposit process can take some time.

What does 4MATIC mean?

4MATIC is the marketing name of a four-wheel drive system developed by Mercedes-Benz. It is designed to increase traction in slippery conditions.

What does VDS mean and how can I tell if my vehicle is equipped with VDS?

„VDS“ = Variable Damping Suspension. This system is specific to Range Rover products and similar in its functionality to alternatives like ADS (adaptive damping system) form Mercedes. Air suspension units that are equipped with this system feature a adjustable softness. This function is used in vehicles with adjustable comfort or sport modes. Range Rover products with VDS come with an additional supply cord located at the top of the air strut. Air struts without VDS lack this cable.

Air struts with VDS.

Air struts without VDS.

What does AIRMATIC mean?

AIRMATIC is a Mercedes-Benz trademark for vehicles with air suspension systems. Compared with a conventional steel suspension, the AIRMATIC air suspension provides advantages in terms of handling safety and ride comfort. The AIRMATIC air suspension automatically adjusts the damping force on each wheel according to the current state of the road.

What does ABC mean?

ABC (Active Body Control) is a registered Mercedes-Benz trademark. It is a high-quality suspension system, which automatically adapts the suspension setting to the respective driving situation. There is also a crosswind stabilisation integrated in ABC systems.

How can I see if my vehicle is equipped with AIRMATIC or ABC?

You can check which suspension you have by opening the bonnet of your car and examining the top of the shock absorber.
If your vehicle is equipped with AIRMATIC, you will have obvious air lines leading from the top of the shocks:

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

What does ADS mean and how can I tell if my vehicle is equipped with ADS?

ADS (Active Damping Systems) is a Mercedes-Benz trademark. The Adaptive Damping System automatically alters the air suspension settings to ensure the driver has high levels of control regardless of the driving conditions. You can check if your vehicle is equipped with ADS by examining the AIRMATIC control button on the dash panel below the air conditioning control:


Is COVID-19 disrupting the delivery process?

Aerosus is going its daily activity without any restrictions or delays due to COVID-19 so far. All orders are processed and delivered on time! If this situation changes, we will immediately inform you.

Do I receive an invoice for my order?

Yes. You'll receive an invoice in PDF format via E-Mail. Please check your SPAM filter for in few instances this mail is falsely filtered.

How much does shipping costs and how long does it take to receive my order?

The delivery time and the shipping costs depend on your preferred delivery option (Standard or Express) and your destination. At our online shop you can find a shipping calculator, which you can use to see how long shipping will take and how much it costs. The calculator can be found in the description of every product:

Where do you ship to?

We ship worldwide. To calculate the shipping time at the costs of your delivery you can use the shipping calculator. It can be found here.


Which Payment methods does Aerosus accept?

Information about payment methods accepted by Aerosus can be found here.

Will there be any additional costs due to customs fees?

All orders up to $800 are free from duties and taxes.


How can I return a product?

All Aerosus products are eligible for a full refund if returned within 30 days of purchase. You can carry out the return either via our customer hotline or directly via our shop’s online returns portal.

1. Please contact our customer service by phone or by email to let us know about the return. We will provide you with a return shipping label.
2. Fill in this form and enclose it in your return package.
3. Print the return shipping label and bring it with you at the post office to ship your parcel.

1. Please visit Returns and Refunds for a detailed information on how to request your return online.
2. After receiving your return request we will send to you a return shipping label and a Packing slip. Print both documents.
3. Enclose the Packing slip in your return package. Remember to bring the return shipping label with you at the post office.

Send the package to:
AT Parts Germany GmbH C/O UPS SCS
Hans Günther Sohl Strasse 4
47807 Krefeld
Tel: 877 492 8296

Refund payments will only be made, using the same payment method you used to make the initial purchase. Please note that you have to bear the costs of the return shipment.

How can I return my old part and how do I get the deposit back?

To return your old part fill in this form and enclose it in your return shipment. Please tick the following points:

• "Reasons for the return" - "Return of the used part"
• "Preferred return option" – "Deposit refund"

Please ensure proper packaging of your item. Note that you have to bear the costs of the return shipment. Refund payments will only be made, using the same payment method you used to make the initial purchase. Please note that the deposit process can take some time.


How secure is shopping on Aerosus?

All your data is encrypted with SSL (Secure-Socket-Layer) and will be treated confidentially. None of your data can be read by anyone. Look for the lock symbol in address bar of your browser:

Nobody will have access to your encoded data. For your own security, always log out after shopping.

How do I use coupons?

After you have registered at our online shop you will receive an email with a coupon code. To use your coupon you need to go to your shopping cart. Now you will see a textbox asking "Have a coupon code?":

Enter the code in the textbox. If it is valid, you will see a message. The value of the coupon will automatically be deduced from the total price.

Is it possible to get a discount?

Yes, it is. If you buy a matching pair (e.g. front axle left and right side), you will get a discount of 10%. Also, if you click on one of our products at our online shop you will automatically be shown the matching pair and its discount:


We are a European company with a valid VAT number (VAT identification number). How can we place an order in your online shop without VAT tax?

After placing all your requiried products into your shopping cart, click on the „Proceed to Checkout“ button. Now you will find the input field with the title „VAT number“ where you can enter your VAT ID number. Please be sure to enter your number without the country code, for example instead of HU13084040156 please enter 13084040156.