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. Shop with confidence: Air Spring with Plastic Piston (MPN 40433) comes with a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is well known for reliability and is trusted by repair professionals worldwide.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality. • We offer a really wide range of parts, covering most makes and models – meaning you can likely find everything you need in one place. • Febi has been around for over 75 years, so we know a thing or two about auto parts and what mechanics need. • Our parts are priced fairly, giving you a great balance between quality and cost. Febi – trusted quality, available at FixParts Online!