Dayco 72358 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 72358

Dayco 72358 is a curved upper radiator coolant hose built for specific Toyota and Geo applications. It uses EPDM construction and a single I.D. hose design to match the routing and connection points required in the cooling system.

Compatible with 1993-1997 Toyota Corolla, upper, and 1993-1997 Geo Prizm, upper, this hose is sized with 1 3/16-inch inside diameters at both ends for a direct replacement-style fit. The Dayco Curved Radiator Hose line focuses on application-specific hose shapes that follow factory routing, helping maintain proper coolant flow in the engine bay.

Key Features

• EPDM rubber construction for cooling-system service
• Curved radiator hose profile for upper hose routing
• 1 3/16-inch inside diameter at both ends
• Black finish for a factory-style appearance
• Single I.D. hose design
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Detailed Description

Dayco 72358 is a radiator coolant hose for upper hose applications on the Toyota Corolla and Geo Prizm. The EPDM material is commonly used in coolant hose construction for its resistance to heat and coolant exposure, while the curved shape supports the original hose path in the engine compartment. This part number, 72358, is a practical choice when replacing a worn, cracked, or softened upper radiator hose on 1993-1997 Toyota Corolla and 1993-1997 Geo Prizm models.

This part cross-references ACDelco 20268S and Gates 21999 for the same application.

Common Uses

• Replacing a cracked upper radiator hose
• Restoring coolant circulation between the engine and radiator
• Addressing coolant seepage at hose ends
• Correcting hose collapse, swelling, or soft spots
• Repairing a hose that no longer follows the factory routing

Installation Notes and Tips

Verify the upper hose routing and end diameters before installation. Inspect hose clamps, radiator necks, and engine fittings for wear or corrosion, and replace damaged components as needed. Confirm the hose seats fully on both connections and check for leaks after the cooling system is refilled and bled.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and dimensional standards for cooling-system service.