Frequently Asked Questions About International S1700-S1900 CAC Clamps, Boots & Hoses

What years and models of International S1700-S1900 trucks are these CAC components compatible with?

These charge air cooler clamps, boots, and hoses are designed specifically for International S1700, S1800, and S1900 series trucks manufactured from 2017 through 2024. They're compatible with both the Cummins ISB 6.7L and ISL9 engines commonly found in these models. Always verify your engine configuration and VIN before ordering, as some mid-year production changes may affect fitment.

How do I know if my CAC boot or hose needs replacement?

Common signs include visible cracks, tears, or bulging in the rubber material, oil residue around connection points, whistling sounds during acceleration, reduced turbo performance, or check engine lights related to boost pressure. During inspection, squeeze the boots firmly - if they feel brittle, show white discoloration, or don't spring back to shape, replacement is recommended. Most technicians suggest replacing CAC boots every 150,000-200,000 miles as preventive maintenance.

What's the difference between OEM-style and heavy-duty silicone CAC hoses?

OEM-style hoses typically use EPDM rubber rated for temperatures up to 250?F and 35-50 PSI boost pressure. Heavy-duty silicone options handle temperatures up to 500?F and boost pressures exceeding 80 PSI, making them ideal for modified engines or severe-duty applications. Silicone hoses also resist oil degradation better and typically last 3-4 times longer than standard rubber, though they cost approximately 40-60% more initially.

Can I install these CAC components myself, or do I need special tools?

Most CAC boot and hose replacements can be completed with basic hand tools including screwdrivers, pliers, and a 7mm-10mm socket set. The job typically takes 30-90 minutes depending on component location. Key tips include warming rigid boots with a heat gun for easier installation, using silicone spray lubricant on connection points, and ensuring clamps are positioned correctly before tightening. Torque clamps to 50-60 inch-pounds to prevent over-tightening damage.

Why do CAC clamps come in different styles, and which type should I choose?

T-bolt clamps provide the most uniform clamping pressure and are recommended for high-boost applications or silicone hoses. Spring-loaded clamps maintain consistent pressure through temperature cycles but can be harder to install in tight spaces. Worm-gear clamps are the most economical but may require periodic retightening. For S1700-S1900 trucks, we recommend stainless steel T-bolt clamps for durability and consistent sealing, especially if you're upgrading to silicone hoses.