For Audi 5000 Quattro 87-88 Strut Insert B4 Series Front Driver or Passenger

Part Number:  21-030390
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Product Details

B4 Series Front Driver or Passenger Side Twin-Tube Strut Insert (21-030390) by Bilstein®. Quantity: 1 per Pack. Bilstein has a legendary reputation for providing original equipment components to many of the world’s finest vehicle manufacturers. The Bilstein B4 Series provides the same OEM quality and ride stability for the aftermarket. Bilstein uses both monotube and twin-tube technology to give the best in OE replacement driving comfort at a great economical price.

B4 Series Front Driver or Passenger Side Twin-Tube Strut Insert (21-030390) by Bilstein®. Quantity: 1 per Pack. Bilstein has a legendary reputation for providing original equipment components to many of the world’s finest vehicle manufacturers. The Bilstein B4 Series provides the same OEM quality and ride stability for the aftermarket. Bilstein uses both monotube and twin-tube technology to give the best in OE replacement driving comfort at a great economical price.

Notes: It’s recommended to replace shock or strut in pairs (passenger and driver side at the same time).

Specifications:

  • Upper Mounting: Stem
  • Lower Mounting: Housing
  • Boot: No
  • Finish: Black Paint

Features:

  • Constant damping characteristics under any load
  • Consistent performance and handling give the vehicle a new car feel every time
  • Proven Bilstein gas pressure technology
  • High OEM quality standards
  • High power reserves for maximum safety
  • Drive as though it’s the first time, every time
  • Technology transfer from original equipment manufacturing and motor sports
  • Comprehensive product range
  • High market coverage and availability
  • Ensures a high level of traction and more precise handling
  • A must-have for powerful sport suspensions
  • Added safety in all dynamic driving situations

Original-Equipment. The world’s foremost automotive brands put their confidence in Bilstein quality. Why? Because brand develops and series-produce suspension components in collaboration with Bilstein partners from the automotive industry. By placing your trust in Bilstein experience too, you’ll be opting for the Bilstein driving experience when you exchange your suspension components.

Gas Pressure Technology. Over time, the mono-tube gas pressure technology developed by Bilstein has established itself as a standard in automotive construction. This technology involves keeping the oil in the absorber under pressure, which prevents it from foaming when temperatures and loads are increasing. As a result, full damping power is retained even when the system is placed under extreme stress, a feature that can be observed in the self-lowering piston.

Mono-tube Upside-Down Technology. The original and best: The original mono-tube gas pressure shock absorbers bore the Bilstein name, and we’re still responsible for producing the best there is. Bilstein’s mono-tube technology is the number-one choice in motorsports and series-production sports cars: no other type gives engineers the same freedom to choose the perfect installation location or position (e.g. Upside-Down technology).

Twin-tube Technology. The proven technology of a twin-tube absorber is applied in the vast majority of all vehicles. Bilstein‘s twin-tube absorbers, featuring “original equipment manufacturer” quality that has undergone rigorous testing, offer a marked improvement in driving characteristics with universal spare parts replaced in a timely and efficient manner.

Replaces Original (OE) Part #:

4A0 413 031, 4A0 413 031 D, 443 413 031 E, 441 413 031 G, 443 413 031 F, 443 413 031 G, 4A0 413 031 J, 443 412 031 F, 441 413 031 N

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