FCS 355171 Suspension Shock Absorber - Front

Front Shock Absorber for Audi Sport Suspension

The FCS 355171 suspension shock absorber is a front replacement for select Audi performance and quattro applications. It is built around the listed compressed length of 14.72 inches, extended length of 20.91 inches, and 6.19 inches of stroke to match the required suspension travel for the covered vehicles.

Compatible With 2017-2025 Audi A4 Quattro, front; 2018-2025 Audi A5 Sportback, front; 2018-2025 Audi S4, front; 2018-2025 Audi S5 Sportback, front; 2018-2024 Audi A5 Quattro, front; 2018-2024 Audi S5, front; and 2017-2020 Audi A4, front. This FCS 355171 shock absorber is listed for applications that exclude electronic controlled suspension and, where noted, require sport suspension.

Key Features

• Front suspension shock absorber for select Audi A4, A4 Quattro, A5, A5 Quattro, A5 Sportback, S4, S5, and S5 Sportback applications
• Compressed length: 14.72 inches
• Extended length: 20.91 inches
• Stroke length: 6.19 inches
• Application-specific fitment for vehicles without electronic controlled suspension, with sport suspension where noted
• FCS part number 355171 for direct catalog lookup

Detailed Description

FCS 355171 is a front suspension shock absorber for Audi models that use a sport-oriented front suspension setup. The listed dimensions help confirm travel range and fitment for the specified chassis applications, including Audi A4 Quattro, A5 Quattro, A5 Sportback, S4, S5, and S5 Sportback. For buyers searching by fitment, this front shock absorber for 2017-2025 Audi A4 Quattro and related models is a direct catalog match when the vehicle configuration matches the notes shown.

FCS is the brand line identified for this part, and the 355171 listing is organized as a direct replacement-style suspension component for the covered Audi applications. If you are comparing front shock absorber options for Audi A4 Quattro or Audi S5 Sportback, verify the suspension equipment on the vehicle before ordering, especially the electronic controlled suspension exclusion and sport suspension note.

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

Common Problems This Part Addresses

• Front-end bounce or excessive oscillation over road imperfections
• Reduced damping control during braking, cornering, or lane changes
• Uneven ride quality caused by a worn front shock absorber
• Noisy or unstable front suspension behavior from age-related wear
• Loss of consistent handling response on Audi sport suspension applications

Installation Notes and Tips

Confirm the vehicle’s suspension equipment before installation. This front shock absorber fits only the listed Audi applications and excludes electronic controlled suspension where specified. Match the part number 355171 to the vehicle’s year, model, and front position, and compare the compressed length, extended length, and stroke length to the removed component before installation.

For best results, inspect related front suspension components for wear at the same time, including mounts and bushings, and replace any damaged parts as needed. Always follow the vehicle manufacturer’s service procedures for torque values and alignment checks after suspension work.

Quality Assurance

FCS 355171 is cataloged as a suspension shock absorber for the specified Audi fitments and dimensional requirements. The part number, application notes, and travel specifications provide the primary verification points for correct selection.