Caterpillar Inc. 9Y-3317 Radiator Core Assembly

The Caterpillar 9Y-3317 Radiator Core is a folded radiator core designed for use in CAT cooling systems, serving as the heat exchanger that transfers heat from engine coolant to ambient air. Caterpillar’s official catalog identifies this part as 9Y-3317 Folded Radiator Core, indicating its role as the core component of a radiator assembly intended for replacement when the existing core is damaged or degraded. As a radiator core, it functions to remove excess heat from the engine by guiding coolant through finned channels where heat is dissipated as air passes across the core. The 9Y-3317 designation appears in CAT’s parts listings, reflecting its established place in Caterpillar’s replacement-part ecosystem and its use in Caterpillar machines that require this core specification.