Overflow Nozzle 1/4in Barb

The Overflow Nozzle 1/4in Barb from ALLSTAR PERFORMANCE is a precision coolant system component designed for racing engines and high-performance cooling applications. This straight-design overflow nozzle directs excess coolant safely away from the engine bay during thermal cycling, preventing pressure buildup and protecting critical engine components. It's an essential upgrade for enthusiasts building serious cooling systems on street and race vehicles.

Constructed from black anodized aluminum, this nozzle offers excellent corrosion resistance and durability in demanding underhood environments. The 1/4-inch hose barb connection provides a secure, reliable interface with standard coolant hose, ensuring leak-free operation under varying pressure conditions. The straight configuration allows smooth coolant flow without turbulence, while the aluminum construction keeps weight minimal—critical for competition builds where every component is optimized.

This overflow nozzle fits seamlessly into custom and factory cooling systems using 1/4-inch barbed hose connections. Whether you're assembling a high-capacity radiator setup, upgrading an existing coolant overflow tank system, or building a race-ready engine bay, this component ensures proper coolant management. Installation is straightforward—simply slide the hose onto the barb and secure with a hose clamp for a maintenance-free seal. The compact 3.5 x 0.85 x 4.5-inch footprint fits tight engine compartments without interference.