Dayco 71708 Radiator Coolant Hose - Upper

Dayco 71708 Curved Radiator Hose Overview

Dayco 71708 is a curved radiator coolant hose built for upper cooling-system routing where a formed EPDM hose is required. It measures 1 1/4 in. inside diameter at both ends and follows a single I.D. hose design for a direct replacement on listed applications.

Compatible with 1987-1991 Chevrolet Corsica upper radiator hose applications and 1990-1991 Pontiac Tempest upper radiator hose applications, this hose supports proper coolant flow in vehicles that need a shaped replacement hose. The Dayco Curved Radiator Hose line focuses on formed hose geometry for accurate routing in the engine bay.

Key Features

• Part number 71708 for easy identification
• EPDM construction for coolant-hose service
• Black finish
• 1 1/4 in. inside diameter at both ends
• Single I.D. hose design
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Upper radiator hose application for listed vehicles

Detailed Description

Dayco 71708 is a formed radiator coolant hose intended for upper hose routing on select Chevrolet Corsica and Pontiac Tempest models. The curved profile helps match the original hose path, while the EPDM rubber construction is suited for cooling-system temperatures and coolant exposure. If you are replacing a worn upper radiator hose on a 1987-1991 Chevrolet Corsica or a 1990-1991 Pontiac Tempest, this hose provides the correct 1 1/4 in. end sizing and a shaped layout for the application.

This part cross-references Gates 21628 for the same application.

What It Helps Address

• Cracked or hardened upper radiator hose material
• Coolant leaks at the hose body or connection points
• Incorrect hose routing in the engine bay
• Restricted coolant transfer caused by a deteriorated hose
• Replacement needs for a formed upper hose on Chevrolet Corsica and Pontiac Tempest models

Installation Notes and Tips

Verify the hose routing, end diameter, and upper-position fitment before installation. Inspect the radiator neck and engine-side connection surfaces for corrosion, residue, or damage, and replace clamps if they no longer hold securely. After installation, refill the cooling system with the correct coolant and check for leaks once the engine reaches operating temperature.

Quality Assurance

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