Charge Air Cooler for International LT RH (2018-2024)

Heavy-Duty Aluminum Replacement Charge Air Cooler for 2018-2024 International LT,RH (Class 8 Platform)

What it Does: The Charge Air Cooler drops compressed intake air temperatures from the turbocharger before combustion on 2018-2024 International LT and RH series trucks to restore boost pressure, lower exhaust gas temperatures, and prevent thermal derate.

The Stock International LT,RH Intercooler Degradation

Under continuous heavy-haul duty cycles, the factory charge air cooler on the International LT and International RH platforms suffers from severe thermal cycling fatigue and vibration-induced stress cracking along the tube-to-header joints. High thermal loads combined with road vibrations lead to micro-fractures, boost leaks, and internal core contamination. When boost leaks develop across the charge air system, the Cummins X15 or Navistar A26 powertrain experiences manifold pressure loss, elevated exhaust gas temperatures (EGT), higher particulate filter soot loading, increased fuel consumption, and severe power derating on steep grades.

The Engineering Solution

Engineered to direct factory geometry, this replacement unit features an all-aluminum core utilizing reinforced header plates and resilient brazed bar-and-plate or tube-and-fin construction to resist structural fatigue under peak manifold boost levels. Measuring 37-1/8 inches in height between tanks, 21-5/8 inches in core width, and 2 inches in core depth, it maximizes heat dissipation surface area without creating excessive intake air restriction. Factory-positioned 4-inch inlet and outlet beaded hose necks ensure high-pressure seal retention under constant boost expansion. Designed as a direct drop-in replacement for OEM references 2516097C91 and 2518689C91, it restores standard manifold pressure dynamics and thermal efficiency across commercial line-haul duty cycles.

What's Included

• 1 Charge Air Cooler

Technical Specifications

Compatibility

• 2018-2024 International LT Series
• 2018-2024 International RH Series

Frequently Asked Questions & Fitment Warnings

Does this fit the Class 8 Platform LT,RH?

Yes, this is a direct fit for the 2018-2024 International LT,RH equipped with the Cummins X15 or Navistar A26 engine matching the listed OE part numbers. Fits only trucks matching OEM numbers 2516097C91 or 2518689C91; verify your existing cooler part number prior to installation.

What maintenance should be completed during cooler installation?

Thoroughly inspect, clean, and degrease intake pipes, replace worn silicone boots with heavy-duty T-bolt clamps, and perform a full pneumatic charge-air pressure test up to 30 PSI before placing the vehicle back in service.

The International Heavy-Duty Standard

Built to endure the unforgiving demands of regional haul and severe-duty commercial transport, this charge air cooler delivers the thermal stability and pressure integrity required to haul maximum gross combined weights without risk of heat soak or unexpected boost loss on long grades.