Dayco 72680 Radiator Coolant Hose - Upper

Dayco 72680 Curved Radiator Hose for Corvette

Dayco 72680 is a curved radiator coolant hose built for the cooling system on select Chevrolet Corvette applications. It uses EPDM construction and a dual I.D. hose design to match the required connection sizes while maintaining a clean, OE-style routing path.

Compatible with 1995-1996 Chevrolet Corvette upper radiator hose applications, this Dayco Curved Radiator Hose supports direct replacement service for the Corvette cooling system. The black EPDM rubber construction is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards.

Key Features

• Dayco Curved Radiator Hose, part number 72680
• EPDM material for radiator coolant service
• Black finish for a factory-style appearance
• Dual I.D. hose design with 1 5/16 in. end 1 inside diameter and 1 3/8 in. end 2 inside diameter
• End 1 outside diameter: 1 21/32 in.; end 2 outside diameter: 1 3/4 in.
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• No heat shield and no protective sleeve

Product Details

The Dayco Curved Radiator Hose line is made for applications that require a formed hose shape and accurate coolant routing. On the 1995-1996 Chevrolet Corvette, upper hose fitment depends on the correct molded profile and dual inside diameters, and this hose is sized accordingly. If you are replacing a worn or leaking Corvette upper radiator hose, Dayco 72680 provides the dimensions and construction needed for a proper cooling-system service part.

This part cross-references ACDelco 22408L and Gates 22463 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse of the hose under heat and pressure
• Poor hose routing caused by a misshaped or deteriorated molded hose
• Cooling-system service needs on a 1995-1996 Chevrolet Corvette
• Replacement of an OE-style curved radiator hose with the correct dual I.D. sizing

Installation Notes and Tips

Verify the hose routing, end diameters, and upper-position fitment before installation. Inspect the radiator necks and adjoining coolant tubes for corrosion, residue, or damage, and replace clamps if they do not hold securely. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Dayco manufactures this radiator coolant hose to recognized SAE specifications for cooling-system service, supporting consistent material and dimensional quality for the listed Corvette applications.