Coolant Expansion Tank 15-18 Mustang Black

The Coolant Expansion Tank 15-18 Mustang Black by Steeda Autosports is a direct OE replacement recovery tank engineered for the S550 generation Ford Mustang (2015–2018 model years). This component manages coolant overflow and system pressure regulation, serving as a critical thermal management upgrade for drivers seeking reliability and factory-correct fitment. Whether you're replacing a failed original tank or upgrading to a more durable aluminum construction, this black powder-coated expansion tank delivers both functional integrity and a refined appearance under the hood.

Constructed from aluminum with a premium black powder coat finish, the Coolant Expansion Tank 15-18 Mustang Black resists corrosion and thermal stress far better than factory plastic tanks. The aluminum core offers superior heat dissipation while maintaining the precise internal geometry required for accurate coolant level monitoring and pressure relief. Steeda Autosports engineered this tank to OE specifications, ensuring proper fitment, hose connectivity, and sensor compatibility without modification to your cooling system plumbing or electrical connections.

Mustang enthusiasts and daily drivers benefit from this upgrade when factory tanks show signs of failure—clouding, leaks, or pressure loss—or when pursuing long-term cooling system reliability. Installation is straightforward for those familiar with basic coolant system service; OE mounting points align perfectly with 2015–2018 Mustang platforms. The black finish complements both stock and modified engine bays, while the aluminum construction resists degradation from ethylene glycol coolants and high-heat environments common in performance and street driving applications.