This part basically replaces a traditional steel coil spring in your suspension system. Instead of a metal spring compressing and rebounding, this uses compressed air. The plastic piston inside helps control the airflow and how the spring compresses and extends – it manages the movement and keeps things smooth. It’s designed to maintain ride height and absorb bumps in the road, just like a regular spring, but with a bit more finesse. It’s part of the overall air suspension system, typically found on vehicles aiming for a really comfortable ride or those that need to handle varying loads – think trucks, SUVs, or even some cars with adjustable suspension. It works with the air compressor, air lines, and the vehicle's computer to keep everything level and stable. It takes the impact from road imperfections and prevents it from transferring directly to the chassis, which is what you feel as a rough ride. A failing air spring will noticeably affect your ride comfort. You’ll notice if the vehicle starts leaning to one side, or if the ride gets seriously bumpy and harsh. Also, the vehicle might sit unevenly, which can mess with your headlights and even affect handling. They’re built to handle a lot, but eventually, they can develop leaks or the internal piston can wear out. It’s not something you want to ignore, because a bad air spring impacts safety and drivability. You can often find these air springs, and a lot of other suspension parts, on sites like Fixparts Online if you're looking to do the repair yourself. Buy risk-free: Air Spring with Plastic Piston (MPN 39434) is covered by a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is a leading global supplier of aftermarket spare parts, offering an extensive range of high-quality components for passenger and commercial vehicles.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality. • We offer a huge range of parts – from engine components to wear-and-tear items – covering many vehicle makes and models. • Febi has been a trusted name in the automotive industry for over 70 years, so you’re choosing a brand with a long history of performance. • You get a great balance of quality and price, meaning you don’t have to break the bank to keep your vehicle running smoothly. FixParts Online – Your Trusted Source for Quality Febi Auto Parts.