Frequently Asked Questions About International 4700-4900 Air Springs & Level Valves

Will these air springs fit my specific International 4700 or 4900 model year?

Air spring compatibility for International 4700 and 4900 trucks typically covers models from 1989 through 2002. However, there are variations based on your truck's suspension configuration (spring or walking beam) and GVWR rating. Before ordering, check your existing air spring's part number or measure the compressed and extended heights. Most 4700 models use a standard 1T15M-4 style spring, while 4900 models may require heavier-duty variants. If you're unsure, provide your VIN or call with your truck's specifications for exact fitment verification.

How difficult is it to replace air springs and level valves on these trucks?

Replacing air springs on International 4700-4900 trucks is a moderate DIY job that typically takes 2-3 hours per axle. You'll need basic hand tools, jack stands, and ideally an impact wrench. The most challenging part is often removing corroded mounting bolts and ensuring proper alignment of the level valve linkage. Common installation issues include seized upper mounting studs and difficulty accessing the top mounting plate. Always replace air springs in pairs to maintain proper ride height and handling. Level valve replacement requires careful adjustment to maintain correct ride height - mark the linkage position before removal.

What's the difference between OEM and aftermarket air springs for my International?

OEM air springs typically feature reinforced rubber compounds and crimped steel end plates, lasting 5-7 years under normal use. Quality aftermarket options from manufacturers like Firestone or Continental often match OEM specifications at 30-40% less cost. The main differences are in rubber thickness (OEM averages 3/8", aftermarket 5/16") and warranty coverage. Avoid budget imports under $50 per spring as they commonly fail within 12-18 months due to thinner sidewalls and inferior rubber compounds that crack in extreme temperatures.

Why is my truck leaning after replacing just one air spring?

Uneven ride height after single air spring replacement is extremely common on International 4700-4900 trucks. Even if the old spring wasn't completely failed, it was likely compressed from age and use. New springs have different compression rates than worn units, causing a 1-3 inch height difference. Additionally, your level valve may need adjustment or replacement if it's not compensating properly. Always replace air springs in axle pairs and check that your level valve linkage moves freely through its full range. If problems persist, the level valve itself may be sticking internally and require replacement.

How do I know when my level valve needs replacement versus just adjustment?

A properly functioning level valve should maintain consistent ride height within 1/2 inch regardless of load. Signs of failure include constant air bleeding, inability to maintain pressure overnight, or extreme height variations (over 2 inches) between loaded and unloaded conditions. Test by manually operating the valve arm - it should move smoothly without binding and return to center. If you hear constant hissing or the valve won't hold position, replacement is necessary. Adjustment alone may fix minor height issues, but valves over 5 years old on these trucks commonly develop internal seal failures requiring complete replacement.