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Bilstein - B4 OE Replacement (Air) Rear Left (45-240973)

Air Suspension Spring

$1,363.00

$1,453.48

You save: $90.48 (6%) off MSRP

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Select your vehicle to confirm fitment:

This part fits

  1. 2015 Audi Q7 TDI Prestige
  2. 2015 Audi Q7 TDI Premium
  3. 2015 Audi Q7 Premium Plus
  4. 2015 Audi Q7 TDI Premium Plus
  5. 2015 Audi Q7 Prestige
  6. 2014 Audi Q7 TDI Premium Plus
  7. 2014 Audi Q7 Prestige
  8. 2014 Audi Q7 Premium Plus
  9. 2014 Audi Q7 TDI Prestige
  10. 2014 Audi Q7 TDI Premium
  11. 2013 Audi Q7 TDI Prestige
  12. 2013 Audi Q7 TDI Premium Plus
  13. 2013 Audi Q7 TDI Premium
  14. 2013 Audi Q7 Prestige
  15. 2013 Audi Q7 Premium Plus
  16. 2012 Audi Q7 TDI Premium Plus
  17. 2012 Audi Q7 TDI Premium
  18. 2012 Audi Q7 Prestige
  19. 2012 Audi Q7 Premium Plus
  20. 2012 Audi Q7 TDI Prestige
  21. 2011 Audi Q7 TDI Premium Plus
  22. 2011 Audi Q7 TDI Prestige
  23. 2011 Audi Q7 Prestige
  24. 2011 Audi Q7 TDI Premium
  25. 2010 Volkswagen Touareg VR6
  26. 2010 Volkswagen Touareg TDI
  27. 2010 Porsche Cayenne Turbo S
  28. 2010 Porsche Cayenne S Transsyberia
  29. 2010 Porsche Cayenne S
  30. 2010 Audi Q7 Prestige
  31. 2010 Audi Q7 TDI
  32. 2010 Porsche Cayenne Base
  33. 2010 Porsche Cayenne GTS
  34. 2010 Porsche Cayenne Turbo
  35. 2009 Volkswagen Touareg TDI
  36. 2009 Volkswagen Touareg Base
  37. 2009 Porsche Cayenne Turbo S
  38. 2009 Porsche Cayenne Turbo
  39. 2009 Porsche Cayenne S
  40. 2009 Porsche Cayenne GTS
  41. 2009 Porsche Cayenne Base
  42. 2009 Audi Q7 TDI
  43. 2009 Audi Q7 Premium
  44. 2008 Audi Q7 Premium
  45. 2008 Volkswagen Touareg Base
  46. 2008 Porsche Cayenne Turbo
  47. 2008 Porsche Cayenne S
  48. 2008 Porsche Cayenne GTS
  49. 2008 Volkswagen Touareg TDI
  50. 2007 Volkswagen Touareg TDI
  51. 2007 Audi Q7 Base
  52. 2007 Audi Q7 Premium
  53. 2007 Volkswagen Touareg Base
  54. 2006 Porsche Cayenne Turbo S
  55. 2006 Volkswagen Touareg Base
  56. 2006 Volkswagen Touareg TDI
  57. 2006 Porsche Cayenne S
  58. 2006 Porsche Cayenne Base
  59. 2006 Porsche Cayenne Turbo
  60. 2005 Volkswagen Touareg Base
  61. 2005 Porsche Cayenne Turbo
  62. 2005 Porsche Cayenne S
  63. 2005 Porsche Cayenne Base
  64. 2004 Volkswagen Touareg V8
  65. 2004 Volkswagen Touareg V6
  66. 2004 Volkswagen Touareg TDI
  67. 2004 Porsche Cayenne Turbo
  68. 2004 Porsche Cayenne S
  69. 2004 Porsche Cayenne Base
  70. 2003 Porsche Cayenne Turbo
  71. 2003 Porsche Cayenne S
  72. show all...
Authorized Dealer

About this product

Part #: 45-240973

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 DesignTwintube
Lower Mount TypeEye 12.1mm
SeriesB4 OE Replacement (Air)
TitleBilstein Shock Absorbers
Upper Mount TypeSpecial
Additional Documents
  1. Installation Instructionspdf
  2. Material Safety Data Sheetpdf
  3. Warrantypdf

See what our community says about bilstein products

SCOTT EPPERSON

110

SCOTT EPPERSON
2013 Ford Focus
What made you choose this particular product?
Better performance
Is this your first time buying from this brand? Did you consider other brands?
Yes. Considered Koni. Didn't really want to mess with the adjustments on yellows.
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?
Yes. It got rid of a lot of the roll. Ride is firm but not harsh.
View on SCOTT's build
What made you choose this particular product?
Price, performance, quality.
Is this your first time buying from this brand? Did you consider other brands?
No, I'm a long time parton of Bilstein parts having used them on previous cars
Was it easy to install? Any installation tips that will help others?
Professionally installed
View on Dino's build
Nate Jeffries

84

Nate Jeffries
1985 BMW 635
What made you choose this particular product?
Came as a kit with the H&R springs.
Is this your first time buying from this brand? Did you consider other brands?
Sure is!
Was it easy to install? Any installation tips that will help others?
Direct fit, just like OEM.
Once you've had a chance to use the product, did it meet your expectations?
Super high quality, ride was definitely better.
View on Nate's build
What made you choose this particular product?
Quality, price, balanced comfort to performance for primary road use.
Is this your first time buying from this brand? Did you consider other brands?
No, I had their dampers on a previous car.
Was it easy to install? Any installation tips that will help others?
Simple installation, as easy as any other shock/spring swap. (Reuses stock top hats.)
Once you've had a chance to use the product, did it meet your expectations?
Happy with this setup.
View on Adam's build
Kal Fortner

862

Kal Fortner
2006 Audi S4
What made you choose this particular product?
Performance
Is this your first time buying from this brand? Did you consider other brands?
Yes, but they came with the car and I will be changing them to KW's very soon
View on Kal's build
WARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

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.

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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.

+ always free shipping in the U.S.
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Smoking Tire / The Drive

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

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

Wallace R

Chevrolet Silverado 1500