International 8100-8300 Leaf Springs-Hangers-Acc

Frequently Asked Questions About International 8100-8300 Leaf Springs, Hangers & Accessories

Will these leaf springs fit my specific International 8100 or 8300 model year?

Our leaf springs are designed to fit International 8100 and 8300 series trucks from 1989 through 2004. However, there are variations based on your truck's suspension configuration, GVWR, and whether you have a single or tandem axle setup. We recommend checking your vehicle's VIN plate or calling us with your truck's specifications to ensure proper fitment. Key details we need include your model year, axle configuration, and current spring pack part number if available.

What's the difference between OEM-style and heavy-duty leaf springs for these trucks?

OEM-style leaf springs match your truck's original specifications and ride characteristics, typically featuring 3-5 leaves depending on your model. Heavy-duty options add 1-2 additional leaves or use thicker leaf material, increasing load capacity by 15-25% but creating a stiffer ride. Heavy-duty springs are ideal for trucks regularly hauling maximum loads or operating in severe service conditions. Standard OEM-style springs work best for mixed-use applications where ride comfort matters.

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

While leaf spring replacement is possible for experienced DIY mechanics, it requires specific tools including a floor jack rated for commercial trucks, heavy-duty jack stands, spring compressors, and torque wrenches capable of 250+ ft-lbs. The job typically takes 4-6 hours per axle. Safety is critical as you're working with heavy components under tension. Many customers find it more practical to have a commercial truck shop handle installation, which usually runs $300-500 per axle including alignment.

How do I know when to replace spring hangers and bushings along with the leaf springs?

Inspect your spring hangers for cracks, excessive rust, or elongated bolt holes - any of these issues require replacement. Bushings should be replaced if you see cracking, separation from the metal sleeve, or if they allow excessive movement when pried with a bar. As a general rule, if your leaf springs have over 200,000 miles, plan to replace bushings at minimum. Complete hanger replacement is recommended every second spring change or when visible damage exists. Replacing worn hangers and bushings with your springs prevents premature spring failure and improves ride quality.

What's included in a complete leaf spring kit versus individual components?

Complete kits typically include the leaf spring assembly, U-bolts, center pins, and spring bushings - everything needed for one spring position. Some kits also include new shackles and hanger bolts. Individual leaf springs come as the spring pack only, requiring you to reuse or separately purchase mounting hardware. While complete kits cost 20-30% more, they save time and ensure all wear components are replaced together. Individual springs make sense when your existing hardware is in good condition or when you're only replacing one damaged spring.