When you run your engine, it generates heat. The cooling system is in charge of managing this heat, preventing your engine from overheating. And the radiator is one of the most crucial elements of your cooling system.
Your radiator has two hoses:
1. Inlet hose: Takes the hot engine coolant and passes it through the radiator
2. Outlet hose: Transports the engine coolant (now at a lower temperature) from the radiator back to the engine
Radiator hoses are made of thick durable rubber, but can erode over time, or fail due to part defects. If they fail, your entire cooling system is at risk of failure.