2015-23 Mustang OEM Coolant Expansion Tank by Ford

Ford Coolant Expansion Tank
Repair the cooling system in your 2015-2023 Mustang with this Ford Original coolant expansion tank. After years of service and numerous heat cycles, the factory plastic coolant expansion tank tends to weaken, become brittle, and crack causing troublesome leaks under the hood of your Mustang. This coolant expansion tank is made of a durable plastic construction that matches the factory tank and has molded fill level markings to ensure topping off your coolant is a simple task. Bolting up to the existing factory mounting points on your radiator support, this expansion tank requires no modifications to be installed. Featuring the correct cap threads, hose locations, and an aluminum insert on the lower radiator hose connection, rest assured it won't deform over time. This Ford Original coolant expansion tank is the perfect choice for restoring the engine bay of your S550 while eliminating irritating cooling system leaks.

What Does An Expansion Tank Do?
An expansion tank connects to your lower radiator hose in order to catch extra coolant or air that is in the system once the engine has reached operating temperature. The coolant expansion tank is also known as a coolant overflow tank, coolant reservoir, or engine coolant degas bottle. The expanding coolant pours over into the expansion tank and then siphons back into the cooling system when temperatures and pressures decrease. This helps keep the radiator full at all times and eliminates any air in the cooling system, allowing your radiator to be more effective.

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