Surge Tank

The HOWE Surge Tank is a compact aluminum coolant recovery reservoir designed for automotive cooling systems that require reliable overflow management and fluid monitoring. This surge tank serves as a critical component in modern engine cooling circuits, collecting coolant overflow during thermal expansion and allowing fluid to return to the main radiator as the engine cools. Built for efficiency and durability, the Surge Tank is ideal for street cars, track vehicles, and custom cooling system installations where space is limited and performance is paramount.

Engineered from lightweight aluminum in a natural finish, the HOWE Surge Tank features a 23.5-ounce capacity in a compact 3-inch diameter, 6-inch length form factor that integrates seamlessly into tight engine bays. The tank includes dual 1/4-inch NPT female inlet ports to accommodate overflow lines from multiple cooling sources, and a single 3/8-inch NPT female outlet for return flow back to the cooling system. This dual-inlet, single-outlet configuration allows builders to manage coolant from both radiator and water pump circuits independently, while the aluminum construction provides excellent thermal conductivity and corrosion resistance in demanding underhood environments.

The Surge Tank is best suited for engine builders, fabricators, and enthusiasts constructing custom cooling systems or upgrading existing setups on track cars, drag racing vehicles, and high-performance street machines. Its compact dimensions (4.3 x 3.45 x 8.2 inches) and lightweight design (0.64 lbs) make it an excellent choice for weight-conscious builds and vehicles with space constraints. The NPT thread ports are industry-standard, allowing straightforward integration with standard radiator hoses and plumbing fittings—no modifications or adapters required for most common cooling system configurations.