Dayco 72724 Radiator Coolant Hose - Upper

Curved Upper Radiator Hose for GM Vans

The Dayco 72724 is a curved radiator coolant hose built for upper cooling-system routing on select Chevrolet Express and GMC Savana vans. Made from EPDM rubber in black, it follows the OE-style shape needed for a clean, secure coolant connection.

Compatible with 1996-2002 Chevrolet Express 1500, Express 2500, and Express 3500, as well as 1996-2002 GMC Savana 1500, Savana 2500, and Savana 3500 in the upper position. The Dayco 72724 is a direct-fit style replacement for vehicles that use a single I.D. hose with matching end dimensions.

Key Features

• EPDM construction for radiator coolant service
• Black finish for OE-style appearance
• Curved hose design for upper radiator routing
• Single I.D. hose configuration
• End 1 inside diameter: 1 9/32 in.
• End 2 inside diameter: 1 9/32 in.
• End 1 outside diameter: 1 21/32 in.
• End 2 outside diameter: 1 21/32 in.
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Product Details

Dayco Curved Radiator Hose 72724 is part of the Dayco Curved Radiator Hose line, which focuses on formed coolant hoses that match the routing and connection geometry used in factory cooling systems. This hose is shaped for upper radiator placement and measures 23 1/2 in. in trunk height, helping it follow the intended path in the engine bay. It cross-references ACDelco 24379L and Gates 22357 for the same application.

Common Cooling Issues This Hose Can Address

• Cracked or hardened upper radiator hose material
• Coolant seepage at the hose connection points
• Loss of flexibility from age and heat cycling
• Incorrect hose shape on Chevrolet Express or GMC Savana upper radiator routing
• Replacement needs after routine cooling-system service

Installation Notes and Tips

• Verify the upper hose routing and end diameters before installation.
• Inspect hose necks, clamps, and adjacent cooling components for wear or corrosion.
• Drain coolant to a safe level before removing the existing hose.
• Confirm fitment for 1996-2002 Chevrolet Express 1500, Express 2500, Express 3500, and 1996-2002 GMC Savana 1500, Savana 2500, Savana 3500, upper position.

Quality Assurance

Manufactured to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for radiator hose service. Dayco 72724 is engineered for the specified Chevrolet Express and GMC Savana applications and follows the dimensional and material requirements listed above.