A Coolant Overflow Tube, also known as a radiator overflow tube, is used in the cooling unit of a machine. One end of the tube is attached to the radiator's top tank, which is positioned above the core of the radiator and serves as the coolant reservoir. The tube is often transparent to enable the visual monitoring of the coolant level.

Attributes:
• Helps to maintain proper coolant level
• Ensures consistent cooling of the engine

Applications:
A Coolant Overflow Tube is used to manage excess coolant generated during the engine's operation. As the engine heats up, the coolant expands. When this expansion exceeds the capacity of the radiator, the excess coolant flows into the overflow tube.