Radiator Overflow Tank 3 in x 10in Black Stainles

The Radiator Overflow Tank 3 in x 10 in Black Stainless by Specialty Products Company (part number 9963BK) is a precision-engineered cooling system component designed for marine and automotive applications requiring reliable coolant recovery. Built from stainless steel with a black powder-coat finish, this overflow tank is designed to resist corrosion in harsh environments while maintaining structural integrity under thermal cycling.

The tank features a 1/4-inch hose barb inlet and outlet connections that accommodate standard marine coolant hose, simplifying installation and replacement on existing systems. Its stainless steel construction withstands constant exposure to salt spray, humidity, and temperature extremes, making it ideal for offshore conditions. The black powder-coat finish provides secondary corrosion protection while maintaining a professional appearance.

Weekend recreational boaters and serious offshore fishermen rely on overflow tanks to prevent coolant loss and maintain system pressure during extended runs. This tank's design complements mid-range marine cooling systems, capturing coolant overflow during operation and allowing controlled refill as the engine cools. Specialty Products Company's proven design is favored for its reliability and performance.