Radiator Overflow Tank 2 in x 13in Black Stainles

The Radiator Overflow Tank 2 in x 13in Black Stainless is a precision-engineered coolant recovery system designed for street and performance vehicles that demand reliable thermal management. As a seasoned mechanic, you know that overflow tanks aren't merely aftermarket accessories—they're critical components that capture coolant expansion, prevent air locks, and maintain system pressure stability during acceleration, braking, and sustained high-RPM operation. This 18-ounce capacity tank is purpose-built for builds where OEM tanks fall short or where a clean, compact design suits custom engine bays and restorations.

Constructed from premium stainless steel with a durable black powder-coat finish, this overflow tank resists corrosion, thermal cycling stress, and the aggressive chemical environment of modern coolants. The 2-inch diameter and 13-inch height give you flexibility in tight mounting locations, while the cylindrical design minimizes turbulence and promotes efficient coolant separation. The polished internal surfaces help reduce sediment buildup and ensure consistent coolant flow rates back to the radiator when system pressure normalizes—a detail that directly impacts cooling efficiency and component longevity in high-output engines.

This tank is ideal for engine swaps, vintage restorations, and modern performance platforms where factory overflow capacity is insufficient or aesthetically incompatible with custom cooling loops. Installers appreciate the straightforward 2-inch inlet/outlet configuration and compact footprint, which simplify bracket fabrication and hose routing in congested engine compartments. Whether you're transitioning to a larger-displacement engine or upgrading a track-focused build with superior coolant recovery, the Specialty Products Company radiator overflow tank delivers the durability and precision fit your modification demands.