Water plumbing (also called coolant plumbing or cooling system piping) refers to the network of hoses, pipes, tubes, connectors, and fittings that carry coolant throughout the engine's cooling system. It connects the engine block, cylinder head, radiator, water pump, thermostat, heater core, EGR cooler, oil cooler, and other components, ensuring continuous coolant flow for efficient heat transfer and temperature control.
