International 9300/9370 CAC Clamps, Boots & Hoses

Frequently Asked Questions About International 9300/9370 CAC Clamps, Boots & Hoses

What does CAC stand for and what do these parts do?

CAC stands for Charge Air Cooler, also known as an intercooler. The clamps, boots, and hoses in this category connect the turbocharger to the charge air cooler and then route the cooled, compressed air into the engine intake. These components create the sealed connections needed to keep boost pressure contained throughout the system.

How do I know if a boot or hose will fit my International 9300 or 9370?

Fitment depends on the specific engine model, chassis configuration, and model year of your truck, since CAC piping routing can vary. Check the diameter and length specifications listed on each product page against the boot or hose currently installed on your truck, and compare part numbers when available to confirm a proper match before ordering.

What material are these boots and hoses made from, and how long should they last?

CAC boots are typically made from reinforced silicone or rubber compounds designed to handle heat, pressure, and constant flexing under the hood. Actual service life varies based on driving conditions, boost levels, and exposure to heat and oil, so we recommend inspecting boots and hoses regularly for cracking, soft spots, or ballooning rather than relying on a set replacement interval.

What are common signs that a CAC boot, hose, or clamp needs to be replaced?

Common warning signs include visible cracks or splits in the boot, soft or swollen sections, a noticeable loss of power or boost, black soot or oil residue around a connection point, and unusual whistling or hissing noises from the engine bay. A failing clamp can also allow a boot to slip off the pipe under boost, so check that clamps are tight and free of rust or damage.

Can I replace a CAC boot or clamp myself, or do I need a shop?

Many owner-operators and shop technicians replace CAC boots, hoses, and clamps themselves, as the job generally involves loosening the old clamps, removing the damaged boot or hose, and installing the new one with properly torqued clamps. Access can be tight depending on the routing, so make sure the engine is cool before starting and double check that all clamps are secure to avoid boost leaks after reassembly.