Upper Radiator Hose 1-1/2 x 30

The Upper Radiator Hose 1-1/2 x 30 by Allstar Performance is an essential cooling system component designed for custom and high-performance automotive builds. This hose serves as the critical pathway between your engine block and radiator, managing coolant flow under pressure and thermal stress. Whether you're building a street rod, race engine, or upgrading an older vehicle with modern cooling architecture, a quality upper radiator hose is non-negotiable for engine longevity and reliable temperature management.

This hose features a 1-1/2 inch inner diameter and 30-inch length, making it suitable for mid-size V8 and inline engine applications where standard factory hoses don't match custom mounting positions. Allstar Performance manufactures this hose with reinforced rubber and embedded spiral wire to withstand high-temperature coolant, pressure cycling, and vibration inherent in performance driving and track use. The 1-1/2 inch diameter provides adequate flow capacity for engines running higher coolant volumes without creating unnecessary restriction, while the extended 30-inch length accommodates non-stock radiator placements, relocated water pumps, and custom engine bay layouts common in restorations and engine swaps.

Mechanics and performance enthusiasts choose this upper radiator hose for custom cooling system builds where OEM hoses cannot be adapted without compromise. It integrates with any radiator featuring standard hose barbed connections and works seamlessly in carbureted and fuel-injected applications. Installation requires secure clamp placement at both ends to prevent coolant weeping under pressure—stainless or spring-loaded hose clamps are recommended for durability. This hose is ideal for vintage engine swaps, custom hot rod builds, and any application requiring flexible routing around modified engine compartment geometry while maintaining reliable cooling performance.