Special discount price: enter JUNE at checkout for 9% off. *
close promo banner icon

Air Suspension Spring

Bilstein - B4 OE Replacement (Air) Rear (44-042301)

$766.00

$817.00

You save: $51.00 (6%) off MSRP

stock messaging In stock at manufacturerIn stock at manufacturer
Ships within 5 business days
Check to see if this fits your vehicle

This part fits

  1. 2006 Mercedes-Benz S500 Base
  2. 2006 Mercedes-Benz S430 Base
  3. 2006 Mercedes-Benz S430 4Matic
  4. 2006 Mercedes-Benz S350 Base
  5. 2006 Mercedes-Benz S500 4Matic
  6. 2005 Mercedes-Benz S500 Base
  7. 2005 Mercedes-Benz S500 4Matic
  8. 2005 Mercedes-Benz S430 Base
  9. 2005 Mercedes-Benz S430 4Matic
  10. 2004 Mercedes-Benz S430 4Matic
  11. 2004 Mercedes-Benz S500 Base
  12. 2004 Mercedes-Benz S500 4Matic
  13. 2004 Mercedes-Benz S430 Base
  14. 2003 Mercedes-Benz S500 4Matic
  15. 2003 Mercedes-Benz S430 4Matic
  16. 2003 Mercedes-Benz S500 Base
  17. 2003 Mercedes-Benz S430 Base
  18. 2002 Mercedes-Benz S430 Base
  19. 2002 Mercedes-Benz S500 Base
  20. 2001 Mercedes-Benz S500 Guard
  21. 2001 Mercedes-Benz S500 Base
  22. 2001 Mercedes-Benz S430 Base
  23. 2000 Mercedes-Benz S500 Base
  24. 2000 Mercedes-Benz S500 Guard
  25. 2000 Mercedes-Benz S430 Base
  26. show all...
Authorized Dealer

About this product

Part #: 44-042301

Bilstein B4 OE Replacement (Air) dampers are designed to replace the original air suspension systems on many European brand vehicles. Bilstein is an OE supplier for air suspension systems; the quality of these products meets, and typically exceeds, the standards set forth by the vehicle's manufacturer. Bilstein B4 OE Replacement (Air) dampers are designed to connect directly into the original connectors on the vehicle, ensuring modification-free installation and restoration of the original feel of the vehicle.

More Details

Boot IncludedNo
FinishBlack Paint
Internal DesignMonotube
Lower Mount TypeSpecial
SeriesB4 OE Replacement (Air)
TitleBilstein Shock Absorbers
Upper Mount TypeEye 14.1mm
Additional Documents
  1. Installation Instructionspdf
  2. Material Safety Data Sheetpdf
  3. Warrantypdf

See what our community says about bilstein products

Wyatt Fletcher

486

Wyatt Fletcher
2013 Ford Focus ST
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Price & performance
Is this your first time buying from this brand? Did you consider other brands?
No, and yes, I considered other brands.
Was it easy to install? Any installation tips that will help others?
n/a
View on Wyatt's build
Rostam Buicki

716

Rostam Buicki
2015 Audi S3
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Wanted easy access to dampening while driving.
Is this your first time buying from this brand? Did you consider other brands?
No. Bilstein master race.
View on Rostam's build
Andre Aivazians

143

Andre Aivazians
1999 Saab 9-3
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Bilstein & Eibach Springs; you can't beat that combo
Is this your first time buying from this brand? Did you consider other brands?
No
Was it easy to install? Any installation tips that will help others?
Yes
Once you've had a chance to use the product, did it meet your expectations?
Keeps the car planted and steady. Rebound could be a bit better as it tends to hop over uneven roads.
Any additional comments?
Great price and great quality overall.
View on Andre's build
Cory Zimmerman

1.2k

Cory Zimmerman
1995 Ford Mustang
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Quality,reliability & performance.
Is this your first time buying from this brand? Did you consider other brands?
Yes this was my first time buying from this brand for this car. I did not consider other brands.
View on Cory's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Have faith in the brand.
Any additional comments?
Hopefully these will perform well for me all around on the truck, giving me good ride quality.
View on Derek's build

TOP RATED Bilstein Suspension

  • Bilstein - B3 OE Replacement (Air) Rear Left photo
    MFR# 40-076614Bilstein - B3 OE Replacement (Air) Rear Left
    $705.00$752.25
    Save $47.25 (6%) off MSRP
  • Bilstein - B3 OE Replacement (Air) Rear photo
    MFR# 40-076638Bilstein - B3 OE Replacement (Air) Rear
    $391.00$416.67
    Save $25.67 (6%) off MSRP
  • California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

    *Some manufacturer restrictions apply.

    About Bilstein

    For more than 50 years, BILSTEIN has been developing successful dampers used in motor racing. The dampers have already contributed to numerous title wins from Niki Lauda and Alain Prost in the Formula One, victories in the 24 h race on the Nürburgring or championship titles in the sports-car mastery. The BILSTEIN brand has been an integral part of the motor racing world.

    Benefits of adding this mod

    Enhanced suspension products like shocks and springs play a critical role in creating a balanced high performance vehicle. Whether you want to attack the apex or mob the Moab, we have you covered with everything from coilover upgrades to high-rise lift kits. From faster cornering to more balanced stopping and acceleration, upgrading your stock suspension components will bring improvements you can feel for any street, track, or off-road build.

    shipping-worldwide-jpg

    we ship worldwide!

    Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

    + FREE GROUND SHIPPING ON U.S. ORDERS OVER $99
    International shipping icon
    Have a question? Ask an Expert!

    Finding the best parts can be tricky

    - but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

    chat-iconLive Chat
    Ask our expert tuners anything!
    call_iconCall Us
    1 (800) 959-4304
    featured vehicle testimonial imagequote icon

    Wheelwell wants to be the new online hub for car parts and accessories.

    author testimonial image
    featured vehicle testimonial imagequote icon

    Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

    author testimonial image

    Matt Farah

    Smoking Tire / The Drive

    featured vehicle testimonial imagequote icon

    Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

    James M.

    Ford Focus ST

    featured vehicle testimonial imagequote icon

    Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

    Wallace R

    Chevrolet Silverado 1500