Cummins 3646236 Charge Air Cooler Assembly

This charge air cooler (aftercooler) assembly carries Cummins part number 3646236. It functions as an air-to-air heat exchanger to cool compressed intake air from the turbocharger before it enters the engine intake manifold. Lowering the intake air temperature increases air density, improving combustion efficiency, engine power output, and fuel economy while reducing NOx emissions. The unit is engineered for heavy-duty diesel applications including on-highway trucks and construction equipment. Verified fitment includes Cummins M11 series engines per factory service manual cooling system group specifications, as well as ISLe and 8.3L (ISC/ISL) variants. Cross-referenced for aftermarket replacement by suppliers such as Vrcoolertech and West End Rad. Always verify compatibility using the engine serial number or VIN prior to installation.