Freightliner SD 108-122 Steer Axle Springs-Hangers

Frequently Asked Questions About Freightliner SD 108-122 Steer Axle Springs-Hangers

What is the difference between a steer axle spring and a spring hanger?

The steer axle spring (leaf spring) is the component that supports the front axle and absorbs road shock, while the spring hanger is the bracket that mounts the spring to the truck frame. Both work together as part of the front suspension system, and both are prone to wear from constant flexing and load stress, which is why they are often sold and replaced in the same category.

Will these springs and hangers fit my Freightliner SD 108 or SD 122 model?

These parts are designed specifically for the Freightliner SD 108 and SD 122 steer axle applications, but exact fitment can vary based on your truck's build year, axle configuration, and original equipment specs. Before ordering, check your VIN or existing part numbers against the listed specifications, or contact our parts team to confirm compatibility with your specific truck.

How do I know if my steer axle spring or hanger needs to be replaced?

Common signs of a worn or damaged spring or hanger include uneven ride height, excessive front-end sagging, cracked or broken leaves, unusual clunking or squeaking noises over bumps, and uneven tire wear on the steer axle. If you notice any of these symptoms, it is a good idea to have the front suspension inspected before the issue affects steering control or leads to further damage.

Can I install a replacement steer axle spring or hanger myself, or should I use a professional?

While experienced technicians with the right tools and lift equipment can replace these components, steer axle suspension work directly affects vehicle handling and safety. Improper installation can lead to alignment issues or steering problems, so unless you have the proper equipment and mechanical experience, we recommend having this job done by a qualified heavy-duty truck technician.

What material and finish options are available for these springs and hangers?

Steer axle springs are typically constructed from heat-treated steel to handle the constant flexing and load-bearing demands of the front axle, while hangers are generally cast or forged steel for durability. Finish options may include raw steel or a protective coating depending on the specific part, so check the individual product listing for exact material and finish details before purchasing.