Dayco 72100 Radiator Coolant Hose - Upper

Dayco 72100 Curved Radiator Hose

Dayco 72100 is a curved radiator coolant hose built for upper cooling-system routing in select Hyundai and Kia applications. Made from EPDM rubber with a black finish, it uses a single I.D. hose design and 1 3/8-inch inside diameter ends for a direct replacement on listed vehicles.

The Dayco Curved Radiator Hose line focuses on OE-style cooling hose construction for vehicles that need a formed hose shape to follow the factory coolant path. This hose is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator coolant service.

Key Features

• Brand: Dayco
• Part number: 72100
• Part type: radiator coolant hose
• Curved upper radiator hose design
• EPDM construction for cooling-system use
• Black finish
• Single I.D. hose configuration
• 1 3/8-inch inside diameter at both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Detailed Description

Dayco 72100 is a formed upper radiator hose for cooling-system service on select Hyundai Sonata, Hyundai XG350, Hyundai XG300, Kia Optima, Kia Magentis, Kia Amanti, and Hyundai Santa Fe applications. It is built from EPDM rubber, a common material for radiator hose service, and its curved shape helps match factory hose routing in vehicles that require a molded upper hose. If you are replacing a worn upper radiator hose on a 1999-2005 Hyundai Sonata or a 2001-2006 Kia Optima, this hose provides the specified fitment and dimensions for the listed applications.

This part cross-references ACDelco 22412M and Gates 22617 for the same application.

What It Helps Address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse of the original hose
• Improper hose routing caused by a damaged formed hose
• Loss of coolant circulation through the upper cooling line
• Replacement needs on listed Hyundai and Kia upper hose applications

Installation Notes and Tips

• Verify the vehicle year, make, model, and upper hose routing before installation.
• For 2005-2006 Hyundai Santa Fe applications, the hose must be cut on both ends.
• Inspect hose clamps, necks, and adjoining cooling-system components before installing the new hose.
• Confirm the 1 3/8-inch end diameters match the vehicle connection points.
• After installation, refill and bleed the cooling system according to the vehicle service procedure.

Quality Assurance

Dayco 72100 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator coolant hose service. Its EPDM construction and formed profile support reliable replacement use in the listed Hyundai and Kia upper radiator hose applications.