Dayco 72060 Engine Coolant Bypass Hose

Dayco 72060 Curved Radiator Hose Overview

Dayco 72060 is a curved radiator hose built for engine coolant bypass service in select GM and Hummer applications. Made from EPDM rubber and finished in black, it uses a single I.D. hose design with 1-inch inside diameters at both ends for a direct-fit cooling system connection.

Compatible With Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, and other listed applications, this hose is specified for vehicles that need a curved radiator hose in the cooling circuit. The Dayco Curved Radiator Hose line focuses on application-specific hose shapes and OE-style fitment for service replacement work.

Key Features

• Part number: 72060
• Engine coolant bypass hose for cooling system service
• EPDM construction for coolant and heat resistance
• Black finish for a factory-style appearance
• Single I.D. hose with 1-inch inside diameter at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• No heat shield and no protective sleeve

Detailed Description

Dayco 72060 is a curved radiator hose engineered for coolant routing in vehicles that require a formed bypass-style hose. The EPDM material is commonly used in cooling system hoses because it handles engine heat and coolant exposure well, while the curved shape helps match the routing used in the original application. This hose is listed for 2002-2004 Hummer H1, 1996-2002 Chevrolet Express 2500 and Express 3500, 1996-2002 GMC Savana 2500 and Savana 3500, and additional Chevrolet and GMC truck and SUV applications. If you are servicing a Chevrolet C2500, GMC K3500, or Chevrolet Tahoe cooling system, Dayco 72060 is the type of replacement hose used in those listed configurations.

This part cross-references Duralast B72060 and Gates 22210 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged bypass hose
• Softening, swelling, or collapse of an original rubber hose
• Improper coolant routing caused by a damaged curved hose
• Cooling system service needs on high-mileage Chevrolet and GMC trucks, vans, and SUVs
• Replacement of a hose that no longer seals securely at the 1-inch connections

Installation Notes and Tips

• Verify the hose routing and end diameters before installation.
• Inspect adjoining fittings, clamps, and necks for corrosion or wear before reassembly.
• Drain coolant as needed and refill the system with the correct specification after service.
• Check for leaks and proper hose seating after the engine reaches operating temperature.
• Use the vehicle’s cooling system layout to confirm the curved hose orientation matches the original part.

Quality Assurance

Dayco 72060 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards, supporting consistent cooling-system hose performance for the listed applications.