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CAT Air & Exhaust

Genuine & OEM Air & Exhaust Parts

CAT Air & Exhaust Parts

The air and exhaust systems deliver clean combustion air to the cylinders and carry exhaust gas away, and restriction on either side costs power and raises operating temperature. This group covers air filters and housings, inlet manifolds, aftercoolers and charge air coolers, throttle components, exhaust manifolds, bellows and flexible sections, silencers, and associated gaskets and clamps. CAT engines in marine and generator installations often use jacket-water or seawater aftercooling rather than air-to-air, which introduces coolant-side corrosion as an additional failure mode. Exhaust manifolds on large CAT engines are segmented rather than one casting, allowing a single damaged section to be replaced instead of the whole assembly.

AMS Parts supplies a wide range of air & exhaust components for CAT engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.

Frequently Asked Questions

What is the difference between an aftercooler and a charge air cooler?

Both cool the compressed intake charge. CAT marine and generator engines commonly use a water-cooled aftercooler, while air-to-air charge air cooling is more typical on mobile machines.

Why are CAT exhaust manifolds supplied in sections?

Larger CAT engines use segmented manifolds so thermal expansion is accommodated and a single damaged section can be replaced without renewing the full assembly.

What causes aftercooler core failure?

On water-cooled units, internal corrosion and scaling from neglected coolant is the usual cause, alongside vibration fatigue. A pressure test identifies a leaking core.