Wabco 9518147840 Air Spring

Description

The Wabco 9518147840 is an Air Spring designed for use in vehicle suspension systems. This air bellow spring provides a comfortable and controlled ride by absorbing road impacts and maintaining vehicle height. It's commonly found in trucks and trailers, contributing to improved handling and stability. This air spring boasts a dimension of 289 x 288 x 372 mm, a maximum operating pressure of 7.0 bar, and is built to OE specification, ensuring reliable performance and longevity. The spring features 2x Male M12 x 1.75 and 4x Female M12 x 1.75 mounting points, a Female M22 x 1.5 port thread, and a stroke of 458.0 mm.

Key Features & Benefits

These basically replace the traditional steel coil springs in your vehicle’s suspension. Instead of metal, they’re these big, durable airbags. They fill with compressed air, and that’s what actually supports the weight of your vehicle. They can be adjusted – you can add or release air to change the ride height and stiffness. Some systems do this automatically, keeping the car level even when you're hauling a heavy load or have uneven weight distribution. Think of it like this – your springs and shocks are working together to absorb bumps and keep your tires on the ground. Air springs specifically handle supporting the weight. They work with your shocks – the shocks control the movement after the spring compresses, and the air spring handles a lot of the initial load. They're commonly found on trucks, vans, and some luxury cars, especially in the rear suspension. They give you a much smoother, more controlled ride, particularly when you’re carrying something heavy or towing.

Symptoms, Risks & Replacements

If an air spring fails, you’ll notice if it's a rear one pretty quickly – the vehicle will likely sit noticeably lower on that side. A front one is a little harder to spot at first, but you’ll feel a significant drop in ride quality and handling. It'll feel bumpy, unstable, and could even affect your steering. They’re important because a failing spring puts a ton of extra stress on other suspension parts like your shocks, and even potentially on your tires. They keep the vehicle level, comfortable, and most importantly, safe. If you're needing to replace one, you generally want to do both sides at the same time. You can often find these on sites like Fixparts Online, along with everything else you might need for the installation.

Warranty Information

Wabco Air Spring (MPN 9518147840) comes with a 1-year warranty.