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Your Vehicle BMW F22 230i xDrive B46 2.0L

Complete Arnott Air Suspension Replacement Kit - W221 S-Class AWD

Includes Two (2) front air suspension struts, Two (2) rear air suspension struts, air suspension compressor, and an air compressor filter with lines.
Arnott
Mfg Part #
AS-2853KT
ECS Part #
ES#5446347
Brand
Arnott

SALE: 3682.00 (5% OFF)
WAS: $3882.99 on 08-02-2026

This product was last offered at the strikethrough price on
08-02-2026


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Product Details

If your W221 S-Class is sagging overnight or riding like a brick, this Arnott Air Suspension Refresh Kit is the permanent fix. This setup replaces your tired factory hardware with upgraded components specifically designed to handle the weight and luxury performance of the 4Matic all-wheel-drive S-Class chassis.

By swapping out your leaking struts for Arnott’s hardware, you're getting a system that pairs ContiTech air bladders with custom-valved shocks. It restores that signature Mercedes-Benz balance: composed, high-speed stability paired with the legendary "floating" ride you expect from an S-Class.

One of the features that makes the W221 such a joy to drive is the AIRMATIC suspension. While it produces a wonderful ride, these air springs are wear items. Over the years, the rubber bladders develop micro-cracks and leak, forcing your compressor to work overtime and eventually leading to total system failure.

Fortunately, ECS Tuning has the solution with this complete front-and-rear overhaul. By replacing all four corners at once, you ensure a level ride height and many more trouble-free miles. If you're missing any mounting hardware, ECS Tuning carries a full line of factory-original nuts, bolts, and clips to ensure a perfect install.

Kit Includes:

  • Arnott Front Air Suspension Struts
  • Arnott Rear Air Suspension Struts
  • Arnott Air Suspension Compressor
  • Genuine Suspension Air Compressor Filter Assembly with Lines

This Part Fits the Following Vehicles

Make Model Submodel Engine Year Chasis Special Fitment Notes
Mercedes Benz S350 4Matic V6 3.0L 642.868 2012 221.183 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S350 Bluetec 4Matic V6 3.0L 642.868 2013 221.183 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 4.6L 278.932 2012 221.194 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 4.6L 278.932 2013 221.194 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 5.5L 273.968 2007 221.186 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 5.5L 273.968 2008 221.186 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 5.5L 273.968 2009 221.186 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 5.5L 273.968 2010 221.186 Only for 4Matic AWD cars with Air Suspension
Mercedes Benz S550 4Matic V8 5.5L 273.968 2011 221.186 Only for 4Matic AWD cars with Air Suspension
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

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Return and Exchanges

Need to set up a return? Click here to begin: Return Process

All you need is your order number and email address.


New/Unused Product Returns

ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.

In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.

Refused Packages

Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.

Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.

Return Process

Return Process

ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!

Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.

Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.


All in store credit balances will expire after one year from the original purchase date.

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Shipping Policy

Free Shipping On Orders $49 & Up

Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.

Free Shipping

Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.


The policies listed above are subject to change at any time without notice.

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Lifetime Replacement

Want to know more about our Lifetime Replacement program?

Click here to learn more.

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Why You Should Shop From ECS Tuning

ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.


Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.

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Cancellation Policy

At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.

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Manufacturer names and/or part numbers are used only for identification purposes.

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