Dayco 72740 Radiator Coolant Hose - Upper

Dayco 72740 Curved Radiator Hose Overview

Dayco 72740 is a curved radiator coolant hose built for upper cooling system routing on select Volkswagen applications. Made from EPDM rubber in black, this branched hose is shaped to follow the factory path and maintain a secure coolant connection under heat and pressure.

Compatible with 2011-2013 Volkswagen Jetta, upper, and 2012-2014 Volkswagen Beetle, upper, this Dayco curved radiator hose supports direct replacement needs for vehicles with the listed cooling system layout. The Dayco 72740 part number is a useful reference when matching the correct upper radiator hose for these applications.

Key Features

• EPDM construction for cooling-system durability
• Black finish for OE-style appearance
• Curved radiator hose design for upper hose routing
• Branched hose configuration for the listed application
• 1 1/4 in. inside diameter at End 1 and End 2
• SAE J20R4 Class D-1 and SAE J1684 Type EC specification support
• Dayco 72740 identification for accurate parts lookup

Product Details

Dayco Curved Radiator Hose 72740 is engineered as a replacement radiator coolant hose for the upper position on select Volkswagen cooling systems. The EPDM rubber construction is suited for coolant service, while the curved profile and branched layout help match the factory hose routing found on the 2011-2013 Volkswagen Jetta and 2012-2014 Volkswagen Beetle. With 1 1/4 inch inside diameters at the main ends and SAE specification references, this hose is built for applications that require the correct shape and connection size.

Dayco’s Curved Radiator Hose line focuses on application-specific hose geometry for vehicles that need a formed replacement rather than a universal hose. For buyers searching Dayco 72740, Volkswagen Jetta upper radiator hose, or Volkswagen Beetle upper coolant hose, this part number helps narrow the correct match quickly.

Common Cooling System Issues This Hose May Address

• Cracked or split upper radiator hose
• Coolant seepage at the hose connection points
• Softening or swelling from heat and age
• Incorrect hose shape after prior replacement
• Restricted fitment caused by a mismatched coolant hose

Installation Notes and Tips

Verify the vehicle year, make, model, and upper hose routing before installation. Compare the original hose shape, end diameters, and branch layout to the Dayco 72740 radiator coolant hose to confirm the correct application. Inspect adjoining clamps, necks, and coolant passages for wear or damage before installing the replacement hose.

After installation, refill the cooling system with the proper coolant and check for leaks once the engine reaches operating temperature. Confirm that the hose follows the intended path without twisting or contact with hot or moving components.

Quality Assurance

This hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and performance requirements for cooling system service. Dayco 72740 is a direct-fit style replacement for the listed Volkswagen applications when matched to the correct upper hose configuration.