International RH Leaf Springs, Hangers & Acc.

Frequently Asked Questions About International RH Leaf Springs, Hangers & Acc.

Will these leaf springs fit my specific International truck model and year?

Our International RH (Right Hand) leaf springs are designed to fit various International truck models, but compatibility depends on your specific truck's configuration. Most commonly, these fit International 4000, 7000, 8000, and 9000 series trucks from the 1990s through early 2000s. However, factors like wheelbase, suspension type, and GVW rating affect fitment. We recommend checking your truck's VIN plate for the exact suspension code or calling our technical support team at 1-888-875-7787 with your VIN number for guaranteed compatibility verification.

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

OEM leaf springs are manufactured to original factory specifications and typically cost 30-50% more than aftermarket options. Our aftermarket springs are built with high-grade spring steel that meets or exceeds OEM specifications, offering comparable performance at a better value. The main differences you'll notice are in the finish (aftermarket typically comes with black e-coat versus OEM's sometimes gray finish) and minor variations in bushing materials. For most applications, our aftermarket springs provide excellent durability and ride quality. Choose OEM only if you require exact factory restoration or have warranty considerations.

Do I need to replace hangers and bushings when installing new leaf springs?

While not always mandatory, we strongly recommend replacing hangers, bushings, and U-bolts when installing new leaf springs. Worn hangers can cause premature spring failure and alignment issues. Based on customer feedback, trucks with over 200,000 miles typically have worn hanger pivot points that create excessive play. A complete replacement ensures proper alignment, prevents squeaking, and maximizes the lifespan of your new springs. Budget an additional $150-300 for a complete hanger and bushing kit to avoid having to redo the job later.

How difficult is the installation, and what special tools do I need?

Installing International RH leaf springs requires intermediate mechanical skills and typically takes 3-5 hours per side. Essential tools include a heavy-duty floor jack (minimum 5-ton capacity), jack stands rated for commercial trucks, impact wrench, torque wrench capable of 450 ft-lbs, and spring compressors for multi-leaf packs. The most challenging aspects are safely supporting the truck's weight and aligning the spring eyes with the hangers. Many customers report needing a second person for alignment. Professional installation typically costs $400-600 if you prefer to have it done at a shop.

What weight capacity should I choose, and how do I know if I need heavy-duty springs?

Spring capacity should match your truck's typical loaded weight, not just the empty weight. Standard capacity springs work well for trucks that rarely carry maximum loads, while heavy-duty springs are essential for consistent heavy hauling or fifth-wheel applications. Signs you need heavy-duty springs include: excessive sagging when loaded, bottoming out on bumps, or measured ride height loss of more than 2 inches under load. Our springs are rated by load capacity (typically 6,000-12,000 lbs per spring), and we recommend choosing springs rated for 10-15% above your regular loaded weight for optimal performance and longevity.