The YNF04327 Lower Radiator Hose is a high-quality rubber coolant hose designed to replace OEM part numbers 245-9178 and 2459178, widely used on Caterpillar E320D EFI excavators. Installed at the lower section of the radiator, this hose returns cooled coolant from the radiator back to the engine, maintaining stable engine operating temperature.
Manufactured from premium reinforced rubber materials, the hose offers excellent resistance to high temperature, pressure, coolant chemicals, oil, and engine vibration. Its durable construction effectively prevents cracking, swelling, leakage, and deformation during long-term heavy-duty operation.
Produced according to OEM specifications, the YNF04327 lower radiator hose ensures accurate fitment and fast installation without modification. It is an ideal aftermarket replacement for engine maintenance, cooling system repair, and excavator overhaul applications.