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Bilstein B4 OE Replacement - Air Suspension Strut
Product description

Bilstein B4 OE Replacement Air Suspension Strut

USP Motorsports has been a product provider of Bilstein products for over 10 years. Bilstein systems have been used on several of our race cars and highly recommended to all of our customers. With excellent quality build and performance standards, Bilstein is an incredible addition to any German vehicle. In 1954, BILSTEIN revolutionized the damping technology and has always be recognized for its top quality and high performance as innovative systems partner for the automobile industry. As Enthusiasts and Professionals in this industry, we stand behind Bilstein.

BILSTEIN engineers worked closely with Mercedes-Benz to develop a top-of-the-class suspension for their top-of-the-line models and the results are the air suspension system. The Mercedes-Benz S-Class (W220/C215) has this system to thank for its famed driving comfort and is also one of the world's first series production vehicles to be equipped with active springs and dampers.


  • High OEM quality standards
  • Proven BILSTEIN gas pressure technology
  • Responds to street and vehicle conditions in milliseconds for instant adaptivity
  • Provides excellent comfort and perfect driving characteristics


B4 OE Replacement (Air) - Air Suspension Spring

B4 OE Replacement (Air)

Internal Design

Lower Mount Type
Eye 15.5mm

Upper Mount Type
Multiple Studs

Black Paint

Bilstein Shock Absorbers

Rear Left

*** Image displayed is a stock photo. Actual product may vary. ***
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15.19# 29.55x7.90x7.90

Bilstein B4 OE Replacement - Air Suspension Strut

02-05 BMW 745i/745Li Rear Left Air Spring Shock Absorber

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On Sale Save 6%
$741.67 $695.00
MFG# 44-191825
SKU# 21752

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  • Cars This Fits ...

  • Make Model Year Engine
    BMW 745Li 2002-2005 (E66) N62 - 4.4L V8
    BMW 745i 2002-2005 (E65) N62 - 4.4L V8