Coolant Expansion Tanks

Upgrade your cooling system with a performance coolant expansion tank. Also called overflow tanks or reservoirs, these components store excess coolant as it expands under heat and pressure, then return it to the system as the engine cools.

Factory plastic tanks can crack, discolor, or leak over time. Performance aluminum expansion tanks offer improved strength, heat resistance, and a cleaner look under the hood. Many feature sight tubes or clear indicators for quick level checks.

We carry direct-fit expansion tanks for Honda, Acura, and other popular platforms, as well as universal tanks for custom setups. A simple but effective upgrade that improves both reliability and style in your engine bay.