Over Flow Tank 1qt

The Over Flow Tank 1qt from ALLSTAR PERFORMANCE is an essential cooling system component designed for racing engines and high-performance vehicles that generate excess coolant pressure. This aluminum overflow tank captures and stores surplus coolant that expands as engine temperature rises, preventing pressure buildup that can rupture radiators and damage gaskets. Whether you're building a custom hot rod, drag racing application, or upgrading a street performance engine, this 1-quart capacity tank provides reliable coolant management during sustained high-RPM operation and thermal cycling.

Engineered in natural aluminum for durability and thermal conductivity, the Over Flow Tank 1qt features a 3/8 inch NPT inlet connection that receives overflow hose from your radiator cap, and a 1/2 inch NPT outlet port for return flow back to the radiator when coolant cools and contracts. The integral petcock drain allows quick coolant evacuation during system maintenance or fluid changes, eliminating the need for separate drain valves. Its compact 6.9 x 4 x 12.35 inch dimensions and lightweight 1.1 lb construction make it easy to mount in tight engine bay spaces typical of vintage and modern performance builds.

Street rods, circle track racers, and engine builders benefit from this tank's straightforward integration with existing cooling systems using standard NPT fittings—no proprietary adapters required. The 1-quart capacity suits most street and mild racing applications, while the petcock drain simplifies winterization and seasonal storage. Installation requires basic plumbing skills and hose routing between your radiator overflow port and the tank inlet; proper mounting prevents vibration fatigue during aggressive acceleration and cornering.