A Coolant Top Tank is designed to be used in an internal combustion engine to regulate the temperature of an internal combustion engine. The tank features a filler neck which provides a convenient accessible point for adding or replenishing coolant in the unit. The Overflow Tube is connected to the Top Tank and serves as a safety feature. In the event of excess pressure or temperature in the cooling unit, the overflow tube allows the coolant to escape.Attributes:• Helps purge air bubbles from the cooling unit• Prevents engine overheatingApplications:A Coolant Top Tank is used as a reservoir for storing the Engine Coolant.