Univ Coolant Expasion Overflow Tank Dual Style

The Universal Coolant Expansion Overflow Tank Dual Style by Moroso is purpose-built for street machines, race cars, and custom builds where OEM coolant reservoirs fall short or don't fit your modified engine bay layout. This tank serves as a critical thermal management component, capturing coolant overflow as your engine heats and cools during operation while preventing air from re-entering the cooling system. Whether you're running a carbureted V8, a fuel-injected swap, or a turbocharged platform, a properly sized coolant expansion tank prevents cavitation, maintains system pressure, and eliminates the guesswork of a collapsed radiator hose or pressurized overflow mess.

This dual-style overflow tank is engineered with a compact footprint (10.4 x 7.85 x 12.2 inches) and lightweight construction at 3.56 pounds, making it ideal for engine compartments where space is at a premium. The dual-style design accommodates both inlet and outlet hose routing without sacrificing capacity, allowing you to run return-line thermostatic control or simple gravity-fed overflow setups depending on your cooling system design. Moroso's reputation for durable polymer construction ensures the tank resists coolant degradation, thermal cycling stress, and vibration—critical factors in high-output engines or vehicles subjected to track use or sustained load.

This universal coolant expansion tank is ideal for hot rodders, engine builders, and automotive enthusiasts installing custom cooling systems where fitment and capacity optimization matter. Its versatile design works with most radiator hose diameters and can be mounted in nearly any engine bay location using simple brackets or straps. Before installation, verify your hose sizing and plan your return-line routing to ensure the tank sits above the radiator cap or at the highest point in your system, allowing trapped air to escape and your engine to run cooler and more reliably.