Dayco 71971 Radiator Coolant Hose - Upper

Curved Upper Radiator Hose for Toyota and Chevrolet

Dayco 71971 is a curved radiator coolant hose built for upper cooling-system routing on select Toyota Corolla and Chevrolet Prizm applications. Made from EPDM and finished in black, it is shaped for the upper hose position and sized with 1 3/16-inch inside diameters at both ends.

The Dayco Curved Radiator Hose line focuses on application-specific hose geometry and OE-style cooling-system fitment. Part number 71971 follows that approach with a single I.D. hose design that matches the routing needs of the listed vehicles.

• EPDM construction for coolant-hose service
• Black finish
• 1 3/16-inch inside diameter at both ends
• Single I.D. hose design
• Upper radiator hose position
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Detailed Product Overview

Dayco 71971 is a curved upper radiator hose for cooling-system replacement on 1998-2002 Chevrolet Prizm and 1998-2002 Toyota Corolla models. The molded curve supports the factory hose path, while the EPDM rubber construction is suited for coolant exposure and underhood temperature cycling. If you are replacing a worn upper hose on a Toyota Corolla or Chevrolet Prizm, this hose provides the correct diameter and routing profile for the listed applications.

This part cross-references ACDelco 22336M and Gates 22335 for the same application.

What This Hose Helps Address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse of the original hose
• Improper hose routing after a cooling-system repair
• Loss of coolant circulation caused by a damaged hose connection
• Fitment issues when replacing the upper hose on a Corolla or Prizm

Installation Notes and Tips

Verify the hose routing and end diameters before installation. Inspect the radiator neck, engine-side connection, and clamps for wear or corrosion, and replace any damaged sealing surfaces before installing the new hose. Confirm that the hose is positioned as the upper radiator hose for the listed vehicle application.

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.