This part basically replaces a traditional steel coil spring in your air suspension system. Instead of a coil pushing up to support the vehicle weight, this uses compressed air inside a flexible, durable air bladder. The steel piston and rod assembly inside adds strength and helps control the movement of the air spring – it keeps things stable and prevents it from bottoming out. It’s a complete assembly, everything you need in one unit. This sits as part of your suspension, usually at each wheel. Its job is to provide a smooth ride by absorbing bumps and keeping the vehicle level. With an air suspension, it’s also adjustable. The system can raise or lower the vehicle for different conditions or for a smoother ride when unloaded. Think of it as a sophisticated replacement for the traditional spring and shock absorber combined. It supports the weight of the vehicle and controls how the wheel moves up and down. It’s important because a failing air spring seriously impacts your ride quality and vehicle handling. You’ll notice if it starts to leak, the vehicle will sit unevenly. If it completely fails, that corner will basically drop to its limit, making it dangerous to drive and potentially damaging other suspension components. It acts like a shield against road imperfections, and when it’s failing, you’ll definitely feel every bump. It's a key piece in maintaining a comfortable and safe driving experience. You can find these online, places like Fixparts Online often have a good selection, but the important thing is getting the right one for your specific vehicle. Buy risk-free: Air Spring with Steel Piston and Piston Rod (MPN 40602) is covered by 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 delivers excellence, FixParts Online delivers to your door.