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Freeze Plugs
An expansion plug located in the side of an engine block that is supposed to
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Bypass Hose
The bypass hose allows a small portion of the coolant to circulate when the thermostat
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Coolant Sensor
A variable resistance thermistor that changes resistance as the engine’s coolant temperature changes. The sensor’s
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Cooling Fan
Like the thermostat, the cooling fan has to be controlled so that it allows the
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Heater Core
A heater core is a radiator-like device used in heating the cabin of a vehicle.








