Upper Radiator Hose 1-1/2 x 20

The Upper Radiator Hose 1-1/2 x 20 from ALLSTAR PERFORMANCE is a critical cooling system component designed for high-performance engines and vehicles requiring reliable fluid transfer under demanding conditions. This hose serves as the primary upper-deck coolant pathway between the engine block and radiator, making it essential for maintaining thermal stability during extended operation. Built for applications ranging from street performance to competition use, this radiator hose replacement ensures consistent coolant flow and system integrity.

Manufactured from durable reinforced rubber, the Upper Radiator Hose 1-1/2 x 20 features a 1.5-inch inner diameter and 20-inch length, precisely engineered to fit OEM and performance cooling systems. The robust construction resists thermal cycling, chemical degradation from coolant additives, and the mechanical stress of pump pressure—typically 15–30 PSI in standard automotive applications. The black rubber material provides excellent flexibility for routing through tight engine bays while maintaining structural integrity at operating temperatures up to 250°F, ensuring efficient heat dissipation without collapse or rupture.

This hose is ideal for engine builders, performance enthusiasts, and fleet maintenance professionals who demand OEM-equivalent reliability in their cooling systems. Installation is straightforward: position the hose between the upper radiator tank and engine inlet, secure with hose clamps at both ends, and verify proper coolant flow. The 0.89 lb weight and compact 2.1 x 1.85 x 20.15-inch profile make handling and installation simple, while the universal upper-deck configuration ensures compatibility with most radiator and engine block combinations requiring standard 1.5-inch hose diameter.