A water hose diagram for a 350 or 5.7L engine typically includes connections for the radiator, water pump, thermostat housing, and heater core. The upper radiator hose connects the radiator to the thermostat housing, while the lower hose links the radiator to the water pump. The water pump circulates coolant through the engine and back to the radiator for cooling. Additionally, hoses connect the engine to the heater core to provide cabin heat.
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