Frequently Asked Questions About International 9900/i/ix Steer Axle Springs & Hangers

What year models of International 9900, 9900i, and 9900ix are these springs and hangers compatible with?

These steer axle springs and hangers are designed to fit International 9900 series trucks from 1996 through 2016, including the 9900, 9900i, and 9900ix models. However, there are slight variations between early models (1996-2003) and later models (2004-2016) in mounting hole patterns and spring eye dimensions. Always verify your truck's specific VIN and production date before ordering to ensure proper fitment.

What are the most common signs that my steer axle springs need replacement?

Key indicators include uneven tire wear on the front axle, the truck leaning to one side when parked on level ground, excessive bouncing or rough ride quality, visible cracks or breaks in the spring leaves, and a noticeable drop in ride height. Additionally, if you're experiencing steering wheel vibration or difficulty maintaining alignment, worn springs could be the culprit. Most drivers report needing replacement between 500,000 to 800,000 miles, depending on load conditions and road quality.

Can I install these springs and hangers myself, or do I need special tools?

While experienced mechanics can perform this installation, it requires heavy-duty equipment including a minimum 20-ton hydraulic jack, heavy-duty jack stands rated for commercial trucks, spring compressors, and proper torque wrenches capable of 450-500 ft-lbs. The job typically takes 4-6 hours per side. Many customers report that improper installation can lead to premature wear or dangerous handling characteristics, so professional installation is strongly recommended unless you have commercial truck experience and the proper equipment.

What's the difference between OEM and aftermarket springs, and which should I choose?

OEM springs are manufactured to exact International specifications using the same steel grades and heat treatment processes as original equipment. Aftermarket options vary widely in quality - premium aftermarket brands often match or exceed OEM specifications at a lower price point, while economy options may use lower-grade steel or fewer leaves. For trucks still under warranty or those requiring DOT compliance documentation, OEM is recommended. For older trucks or cost-conscious repairs, premium aftermarket springs from established manufacturers typically provide the best value.

How do I determine the correct spring rate and capacity for my specific truck configuration?

Spring selection depends on your truck's front axle weight rating (typically 12,000, 13,200, or 14,600 lbs for 9900 series), wheelbase length, and typical load distribution. Check the specification tag on your driver's door jamb for the front GAWR (Gross Axle Weight Rating). Heavy-haul or severe-service applications may require upgraded springs with additional leaves or higher spring rates. When in doubt, providing your VIN to our parts specialists ensures you receive the correct springs for your specific configuration and application.