Cummins 3819450 Charge Air Cooler Assembly

The Cummins 3819450 is a charge air cooler assembly engineered for the KT19 series diesel engines, specifically rated for the KT19-C450 configuration. This component functions as an air-to-air or air-to-water heat exchanger (aftercooler) to reduce compressed air temperature from the turbocharger before entering the intake manifold, increasing air density for improved combustion efficiency and emissions control. Constructed with aluminum core and tank design for optimal thermal transfer and corrosion resistance. The unit is manufactured to Cummins OEM specifications for direct replacement fitment. It interfaces with the engine intake manifold and turbocharger outlet piping. Regular inspection for fin damage, leaks, and clamp integrity is required per Cummins maintenance intervals. This part supersedes or cross-references legacy part numbers within the K19/KT19 cooling system bill of materials.