Bilstein 34-030172 Suspension Strut Cartridge - Rear

Bilstein B6 Rear Strut Cartridge for Audi Quattro

The Bilstein B6 Performance strut cartridge is a direct performance upgrade for OE dampers and is built to work with the factory spring. For rear suspension service on select Audi Quattro models, this cartridge uses an application-specific valve setup and a monotube design to improve handling response and stability.

Part number 34-030172 is engineered for rear suspension applications on the Audi 4000 Quattro, Audi Quattro, Audi 80 Quattro, and Audi 90 Quattro. It is finished in Bilstein’s yellow paint and includes a black bellows boot.

Key Features

• Bilstein B6 Performance series rear suspension strut cartridge
• Monotube internal design for consistent damping control
• Application-specific valve settings matched to OE spring use
• Black bellows boot included
• Yellow painted finish
• Upper mount type: stem; lower mount type: housing

Product Details

Bilstein B6 Performance dampers are built as an OE damper upgrade for drivers who want firmer, more controlled rear suspension behavior without changing the factory spring setup. On the Audi Quattro platform, this helps maintain predictable road feel and improved chassis control during everyday driving and spirited use. The monotube construction supports consistent performance, while Bilstein’s testing standards are used to verify quality against OE-level requirements. This part number 34-030172 is a rear suspension strut cartridge for 1983-1985 Audi Quattro, 1984-1987 Audi 4000 Quattro, and 1988-1989 Audi 80 Quattro and 90 Quattro applications with the listed strut diameter notes.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive rear body movement over uneven pavement
• Reduced damping control from worn OE struts
• Loose or unsettled rear suspension feel
• Inconsistent handling response in Audi Quattro rear suspension service
• Need for an OE-spring-compatible performance replacement

Installation Notes and Fitment

• Fits 1988-1989 Audi 80 Quattro, rear, 55mm outside strut diameter; B6 Performance
• Fits 1988-1989 Audi 90 Quattro, rear, 55mm outside strut diameter; B6 Performance
• Fits 1984-1987 Audi 4000 Quattro, rear; B6 Performance
• Fits 1983-1985 Audi Quattro, rear, 55mm outside strut diameter; B6 Performance

Verify rear strut diameter and OE spring configuration before installation. Use the vehicle’s factory mounting points and confirm that the stem upper mount and housing lower mount match the original setup for the Audi Quattro, Audi 4000 Quattro, Audi 80 Quattro, or Audi 90 Quattro.

Quality Assurance

Bilstein B6 Performance dampers are rigorously tested to meet or exceed OE standards, with application-specific tuning for the listed Audi rear suspension applications. Bilstein’s monotube damper design is used to support consistent handling performance and long-term service quality.