Bilstein 40-303444 | B3 OE Replacement (Air) | Air Suspension Spring

SKU 40-303444

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Product Specs for Bilstein 40-303444

  • SeriesB3 OE Replacement (Air)
  • Warranty:Bilstein Warranty
  • UPC: 651860849621
  • MPN: 40-303444
  • California Proposition 65: WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
  • Finish: Black Paint
  • Series: B3 OE Replacement (Air)
  • Title: Bilstein Shock Absorbers
  • Part Interchange:
    • Mercedes-Benz: 212 320 21 25; 212 320 39 25; 212 320 21 25; 212 320 39 25; 212 320 39 25; 212 320 21 25; 212 320 21 25; 212 320 39 25; 212 320 39 25; 212 320 21 25
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Bilstein 40-303444 Details

Bilstein B3 Air Springs

Preserving the original driving specifications should be the most important aspect when replacing suspension components. For the replacement of factory air springs there is no better choice than Bilstein. Bilstein B3 OE Replacement air bags are a direct replacement to the factory originals. Bilstein is an original equipment supplier for air suspension components and the quality typically exceeds the standards set forth by the vehicle's manufacturer. Each B3 OE replacement suspension air bags are designed to connect directly into the original connectors on your vehicle, ensuring modification-free, easy installation and restoration of the original handling.

BILSTEIN B3 Air Bags Features:
  • Uncompromising comfort and handling.
  • Rapid adjustment to road and driving conditions.
  • Constant damping power under any load.
  • High power reserves for maximum safety.
  • Easy to install, no modifications.
  • Restores factory ride characteristics.
  • Bilstein quality you can trust.

Vehicle Application Guide for Bilstein 40-303444

The 40-303444 Bilstein 40-303444 | B3 OE Replacement (Air) | Air Suspension Spring is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Bilstein Shocks OEM Air Suspension , to view all vehicle makes and models.

YearMakeModelVehicle OptionInstallation Notes
2011 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2012 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2013 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2014 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2015 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2016 Mercedes-Benz E350 4Matic
Body Style: Wagon
With Air Suspension
2015 Mercedes-Benz CLS550 Base
Position: Rear Left
Rear Spring Type: Air
2015 Mercedes-Benz CLS550 4Matic
Position: Rear Left
Rear Spring Type: Air
2016 Mercedes-Benz CLS550 Base
Position: Rear Left
Rear Spring Type: Air
2016 Mercedes-Benz CLS550 4Matic
Position: Rear Left
Rear Spring Type: Air
2017 Mercedes-Benz CLS550 Base
Position: Rear Left
Rear Spring Type: Air
2017 Mercedes-Benz CLS550 4Matic
Position: Rear Left
Rear Spring Type: Air
2014 Mercedes-Benz CLS550 Base
Position: Rear Left
With Air Suspension
2014 Mercedes-Benz CLS550 4Matic
Position: Rear Left
With Air Suspension
2013 Mercedes-Benz CLS550 Base
Position: Rear Left
With Air Suspension
2013 Mercedes-Benz CLS550 4Matic
Position: Rear Left
With Air Suspension
2012 Mercedes-Benz CLS550 Base
Position: Rear Left
With Air Suspension
2012 Mercedes-Benz CLS550 4Matic
Position: Rear Left
With Air Suspension
2015 Mercedes-Benz E400 4Matic
Body Style: Wagon
With Air Suspension
2016 Mercedes-Benz E400 4Matic
Body Style: Wagon
With Air Suspension
2016 Mercedes-Benz CLS400 Base
Position: Rear Left
Rear Spring Type: Air
2015 Mercedes-Benz CLS400 Base
Position: Rear Left
Rear Spring Type: Air

Customer Q&A - Bilstein 40-303444


Proven design technology, a superior manufacturing process and a commitment to quality control characterize the Bilstein shock absorber production process. At Bilstein over 40% of the production personnel are involved with quality control to maintain their industry-leading level of shock absorber efficiency and long life performance.

In this pursuit of excellence, Bilstein has received worldwide acclaim for quality shock absorbers that have set new industry standards. Setting high standards has always been a top priority with Bilstein and a consistent set of parameters and performance guidelines go into the development of each Bilstein shock application.

For more information on Bilstein shock absorbers and struts, or call us at 1-800-358-4751.

Bilstein Warranty

If a shock/strut malfunctions and BILSTEIN determines it to be defective, Bilstein will either replace it or repair it, depending on the term of the warranty based on the assembly's model type.


2 Year Limited Warranty B3 OE Replacement, B1 OE Replacement (Air), B8 5160 , B8 5160 Classic, B8 5162, B8 8100, B8 8100 (Bypass) , B8 8100 (Bypass) , B8 8112 (ZoneControl CR), B8 8100 (ZoneControl R)

Lifetime Limited Warranty - On gas pressure shock absorbers and struts for as long as you, the original purchaser, own your car. B3 OE Replacement (Air), B6 Series, B8 5100 Series, B8 5112 Series, B8 6100 Series, B8 Control Arms, B8 Performance Plus, B12 Series.

90 Day Limited Warranty - On AK Series, AS2 Series, AS2-R Series, AS2 Series, AS2-R Series, B1 (Components), B8 5125, B8 5165, B8 5165 Classic, B8 8125, BILSTEIN Clubsport, Black Hawk Powersports.

What the warranty does not cover

Original equipment shock absorbers: if your vehicle was equipped with BILSTEIN from the factory (original equipment) warranty claims must be directed to the vehicle manufacturer.*

Improper installation, racing, driving competition or off-road use, modified use or applications other than Bilstein recommended vehicles, commercial vehicles, bent or broken rods showing abuse or abnormal wear, surface finish, boot or mounting hardware, rubber bushings are not covered.

Labor charges are not covered by any of the foregoing limited warranties.

You can view the full details of Bilstein’s warranty here.


How to get service

If a Bilstein product fails as a result of a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

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