Frequently Asked Questions About Peterbilt 352 Steer Axle Springs & Hangers
What years and models of Peterbilt 352 are these steer axle springs compatible with?
Our steer axle springs and hangers are designed to fit Peterbilt 352 models from 1969 through 1980. However, compatibility can vary based on your specific axle configuration and GAWR (Gross Axle Weight Rating). We recommend checking your truck's OEM plate or contacting us with your serial number to ensure proper fitment, especially if your 352 has been modified or has non-standard axle specifications.
Are these springs OEM quality, and what weight ratings are available?
We carry both OEM-specification springs and heavy-duty aftermarket options. Standard springs typically support 12,000 to 14,000 lb front axle ratings, while our heavy-duty options can handle up to 16,000 lbs. All springs meet or exceed DOT standards and are manufactured from high-grade spring steel with proper heat treatment. Look for the capacity rating stamped on each spring leaf to match your specific application.
Can I install these springs myself, or do I need special tools?
While experienced mechanics can perform this installation, it requires heavy-duty spring compressors, proper jack stands rated for commercial trucks, and impact tools capable of handling high-torque applications. The job typically takes 3-4 hours per side. Critical safety tip: never attempt to remove loaded springs without proper compression tools, as the stored energy can cause serious injury. Many customers prefer professional installation to ensure proper alignment and torque specifications.
How do I know when my steer axle springs need replacement?
Common signs include uneven tire wear on the front axle, truck pulling to one side, visible cracks or breaks in spring leaves, excessive sagging when loaded, or a harsh ride quality. Measure your front ride height from the axle center to the frame rail - if it's more than 1 inch lower than factory specifications, replacement is recommended. Also inspect for rust penetration beyond surface corrosion, as this significantly weakens the spring.
Do I need to replace hangers and bushings when changing springs?
We strongly recommend replacing hangers, shackles, and bushings simultaneously. Old hangers often develop stress cracks that aren't visible until removed, and worn bushings can cause premature spring failure. Our complete kits include new Grade 8 hardware, polyurethane or rubber bushings (your choice), and properly sized shackles. This ensures proper spring movement and prevents binding that leads to early failure. Budget an additional $150-300 for a complete hanger kit per side.
