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A coolant line is a flexible or rigid pipe that carries coolant (usually a mixture of water and antifreeze) through a vehicle's cooling system. The coolant is circulated to absorb heat from the engine and other components, preventing overheating and ensuring the engine operates within its optimal temperature range.

A coolant line transports coolant from the radiator to the engine and other components, such as the heater core or turbocharger. It helps transfer heat away from the engine and dissipates it through the radiator, keeping the engine temperature stable. The coolant line plays a vital role in preventing engine damage caused by excessive heat.

Coolant lines are typically located in the following areas: From the radiator to the engine: Carrying coolant to regulate engine temperature. Heater core: Coolant lines supply coolant to the heater core to provide cabin heat. Turbocharger: In some vehicles, coolant lines help cool the turbocharger to prevent overheating. Thermostat housing: Connects to the thermostat to manage coolant flow based on temperature.

Rubber coolant lines: Flexible hoses, commonly used for their durability and resistance to high temperatures. Metal coolant lines: Rigid pipes, often made of steel or aluminum, used for areas requiring more structural integrity. Silicone coolant lines: High-performance hoses made from silicone, known for their heat resistance and strength.