Dayco 72439 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose 72439

The Dayco 72439 curved radiator hose is a lower coolant hose built for specific Volkswagen applications that require a 1 1/4-inch inside diameter at both ends. Made from EPDM and finished in black, it follows the routing needed for a direct-fit cooling system connection on select Golf and Jetta models.

For buyers searching for a lower radiator hose for 1994-1999 Volkswagen Jetta or 1995-1999 Volkswagen Golf, this Dayco Curved Radiator Hose 72439 matches the listed fitment and hose dimensions.

Key Features

• EPDM construction for cooling-system hose service
• Black finish for a factory-style appearance
• 1 1/4-inch inside diameter at both ends
• Single I.D. hose design
• Lower radiator hose position
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Product Details

Dayco Curved Radiator Hose 72439 is part of the Curved Radiator Hose line, which focuses on formed hose routing for vehicles that need a specific bend profile to connect the engine cooling circuit correctly. This hose is listed as a lower radiator coolant hose and is intended for Volkswagen Golf and Volkswagen Jetta applications with the specified fitment. The EPDM material is commonly used in coolant hose construction for its resistance to heat and coolant exposure, while the curved shape helps match the original hose path in the vehicle.

This part cross-references ACDelco 22408M and Gates 22603 for the same application. It is a direct fit for 1995-1999 Volkswagen Golf, lower, and 1994-1998 Volkswagen Jetta, lower. It also fits 1999 Volkswagen Jetta, lower, for vehicles without air conditioning.

Common Issues This Hose Can Address

• Coolant leakage from a cracked or aged lower radiator hose
• Softening, swelling, or collapse of the original hose under heat
• Improper hose routing caused by a worn or misshaped formed hose
• Cooling system service needs on a Volkswagen Golf or Jetta
• Replacement of a lower hose that no longer seals securely at the ends

Installation Notes and Tips

Verify the hose routing, end diameters, and lower position before installation. This hose has a 1 1/4-inch inside diameter at both ends and is listed for specific Volkswagen Golf and Jetta applications, including 1999 Jetta models without air conditioning. Inspect clamps, necks, and adjoining cooling system components for wear before installing the new hose.

Quality Assurance

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