AIR SPRINGS

Air Springs For Peterbilt Trucks

Air springs are a key part of your Peterbilt's suspension system, absorbing road shock and maintaining ride height under varying loads. They provide a smoother ride than traditional leaf springs and allow for height adjustment, which is essential for proper trailer coupling and dock loading. Over time, air springs develop cracks, leaks, and dry rot that compromise ride quality and can cause the truck to sit unevenly. We carry replacement air springs for both cab and chassis suspension applications on Peterbilt trucks.

Frequently asked questions about air springs

How do I know when my air springs need to be replaced?

Watch for the truck leaning to one side, a rougher than normal ride, visible cracks or bulges in the air spring rubber, and the air suspension system running more frequently to maintain ride height. If you hear air leaking near the suspension, the spring likely has a puncture or a deteriorated bellows.

What is the difference between cab air springs and suspension air springs?

Cab air springs are smaller units mounted between the cab and the frame to isolate the driver from road vibration. Suspension air springs are larger and support the full weight of the truck and its load at the rear axle. Both types are critical for ride comfort, but suspension air springs also affect load handling and braking stability.

Can I replace air springs myself?

Air spring replacement is a manageable job for someone with mechanical experience and the right tools. You'll need to safely support the truck, depressurize the air system, and remove the mounting hardware. It's important to inspect the mounting plates, shock absorbers, and air lines while the spring is off, as worn supporting components can shorten the life of a new air spring.

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