Peterbilt 352 Leaf Springs, Hangers & Acc.

Frequently Asked Questions About Peterbilt 352 Leaf Springs, Hangers & Acc.

What years and models are these leaf springs compatible with?

Our Peterbilt 352 leaf springs are designed to fit all 352 models from their production years (1969-1980). However, compatibility can vary based on your truck's specific configuration, including cab style, wheelbase, and whether it has a single or tandem axle setup. We recommend checking your truck's OEM and existing leaf spring part numbers before ordering, or contact our technical support team with your truck's specifications for exact fitment confirmation.

How difficult is it to install these leaf springs and hangers?

Installing leaf springs requires intermediate to advanced mechanical skills and proper equipment. You'll need a heavy-duty jack or lift system, spring compressors, and standard hand tools. The process typically takes 4-6 hours per axle for experienced mechanics. Critical safety considerations include properly supporting the frame and axles during installation. Many customers choose professional installation due to the weight of components and safety requirements. Always replace U-bolts and bushings during installation for optimal performance.

What's the difference between OEM and aftermarket leaf springs for my 352?

OEM-style leaf springs match original factory specifications for spring rate, arch, and load capacity. Aftermarket options often provide variations such as heavy-duty ratings for increased payload, progressive rate springs for improved ride quality, or lifted configurations. Our aftermarket springs use high-grade spring steel that meets or exceeds OEM standards. The main differences you'll notice are in ride height options, load ratings (standard vs. heavy-duty), and price points, with aftermarket typically offering better value.

How do I know when to replace my leaf springs and hangers?

Common signs include sagging ride height, uneven tire wear, excessive bouncing or harsh ride quality, visible cracks or breaks in spring leaves, and worn or elongated spring eye bushings. Hangers should be replaced if you notice cracks, excessive rust, or worn mounting holes. As a general rule, inspect your suspension components every 50,000 miles or annually. Trucks used in severe service conditions may require more frequent replacement.

What additional parts should I order with my leaf springs?

For a complete and proper installation, you should also order new U-bolts (never reuse old ones), spring eye bushings, shackle bushings, and center pins. Consider replacing shackles and hangers if they show wear. Many customers also upgrade their shock absorbers at the same time since the suspension is already disassembled. We offer complete suspension kits that include all necessary hardware, which can save time and ensure you have everything needed for the job.