Frequently Asked Questions About International LoneStar Drive Axle Springs & Hangers

Will these springs and hangers fit my specific year International LoneStar model?

Our drive axle springs and hangers are designed to fit International LoneStar models from 2009 to present. However, there can be variations based on your truck's configuration, including whether you have a single or tandem axle setup, and your specific suspension type (air ride vs. spring ride). We recommend checking your VIN or calling our technical support team at 1-888-875-7787 with your truck's details to ensure proper fitment before ordering.

What's the weight capacity of these replacement springs, and how do I know which ones I need?

Drive axle spring capacities typically range from 12,000 to 23,000 pounds per axle, depending on your truck's specifications. The correct capacity depends on your truck's GAWR (Gross Axle Weight Rating), which you can find on the certification label inside your driver's door jamb. Common configurations include 20,000 lb tandem setups (40,000 lb total) and 22,000 lb tandem setups (44,000 lb total). Using incorrect capacity springs can lead to poor ride quality, premature wear, or safety issues.

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

While experienced mechanics can install drive axle springs and hangers, this job requires heavy-duty tools and safety equipment. You'll need a heavy-duty floor jack or lift capable of supporting your truck's weight, spring compressors, torque wrenches capable of 450-500 ft-lbs, and proper safety stands. The old springs are under significant tension and can be dangerous to remove. Most customers opt for professional installation, which typically takes 3-4 hours per axle at a qualified truck shop.

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

OEM springs are manufactured to International's exact specifications and typically cost 30-40% more than quality aftermarket options. Aftermarket springs from reputable manufacturers like Dayton Parts, Triangle Suspension, and Reyco use the same spring steel standards and often feature improved corrosion protection. The main differences are price and warranty coverage. OEM parts may be required if you're under warranty, but aftermarket springs provide excellent performance and value for most applications.

How long do these springs typically last, and what are the signs they need replacement?

Quality drive axle springs typically last 300,000 to 500,000 miles under normal operating conditions, though severe-duty applications may see shorter lifespans. Signs your springs need replacement include: visible cracks or breaks in the spring leaves, noticeable truck lean or uneven ride height side-to-side, excessive bouncing or harsh ride quality, separated or shifted spring leaves, and worn or damaged spring eyes. Regular inspection during PM services can catch problems early and prevent roadside failures.