A Coolant Expansion Tank, also known as a Coolant Reservoir is used in the cooling unit of a machine. It serves as a reservoir for excess coolant, allowing for the expansion and contraction of the coolant as it heats up and cools down during engine operation.Attributes:• Prevents coolant loss and heat buildup• Cap allows for the release of excess pressure from the cooling unitApplications:A Coolant Expansion Tank is used to maintain the proper coolant level within the cooling unit.