Coolant is transferred throughout the cooling system by hoses.
Most vehicles have the engine mounted on flexible mountings to reduce noise and vibration. Since the radiator is mounted to the vehicle body, flexible hoses are needed.
Coolant is also carried to the heating system which is usually inside the cabin of the vehicle. Coolant hoses vary in diameter depending on the volume of coolant that passes through them. Heater hoses carry a smaller volume. All hoses are subject to hot coolant and high under-bonnet temperatures, and they can deteriorate and fail.
oolant is transferred throughout the cooling system by hoses.