Frequently Asked Questions About International S2100-S2300 Air Springs & Valves

Will these air springs fit my specific International S2100 or S2300 model year?

These air springs are designed to fit International S2100 and S2300 models from 1989 through 2010. However, there are variations based on suspension configuration and GVWR. Always verify your truck's suspension type (Hendrickson, Reyco, or International) and check the OEM part number on your existing air spring before ordering. The most common fitments are for trucks with Hendrickson HAS series and Reyco 79KB suspensions.

How difficult is it to install these air springs myself, and what tools do I need?

Installation typically takes 2-3 hours per axle for someone with basic mechanical skills. You'll need standard hand tools, jack stands, and ideally an air impact wrench. The most challenging part is safely supporting the axle while removing the old spring. Many customers report that having a helper makes the job much easier. Always disconnect the air lines and drain the system before starting. If you're not comfortable working with suspension components, professional installation is recommended for safety.

What's the difference between OEM and aftermarket air springs for these trucks?

OEM air springs typically use reinforced rubber compounds and steel girdle rings, while quality aftermarket options often feature similar construction at a lower price point. The main differences are in rubber compound formulation and warranty coverage. Reputable aftermarket brands like Firestone and ContiTech offer comparable performance and durability to OEM parts. Look for air springs with crimped (not clamped) bead plates and multiple-ply construction for best results.

How do I know if my height control valve needs replacement along with the air springs?

Common signs include uneven ride height side-to-side, slow height adjustment after loading, or constant air bleeding from the valve. If your truck takes more than 60 seconds to level after adding or removing weight, or if one side sits noticeably lower than the other, the valve likely needs replacement. When replacing air springs on trucks over 15 years old, it's often cost-effective to replace the height control valve simultaneously to avoid future labor costs.

What's the typical lifespan of these air springs, and how can I maximize it?

Under normal operating conditions, quality air springs last 5-8 years or 300,000-500,000 miles. Lifespan depends heavily on load conditions, road quality, and maintenance. To maximize life: maintain proper air pressure (typically 60-100 PSI depending on load), inspect for rubbing or chafing monthly, keep the air system free of moisture with regular tank draining, and avoid overloading beyond GVWR. Premature failure often results from contaminated air systems or operation at incorrect pressures.