Dayco 72508 Radiator Coolant Hose - Lower - Pipe To Radiator

Dayco 72508 Curved Radiator Hose

The Dayco 72508 curved radiator hose is a direct-fit coolant hose for select Honda Civic applications. Built from EPDM rubber and finished in black, it is shaped for the lower pipe-to-radiator routing used on 2003-2005 Honda Civic models.

As part of Dayco’s Curved Radiator Hose line, this hose is formed to follow the factory coolant path and maintain a clean, OE-style fit in the engine bay. The 72508 is a practical replacement for a worn, cracked, or leaking lower radiator hose on the Honda Civic.

Key Features

• EPDM construction for coolant-system service
• Black finish for a factory-style appearance
• Single I.D. hose design
• 1 1/16 in. inside diameter at both ends
• 1 3/8 in. outside diameter at both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Fits 2003-2005 Honda Civic, lower - pipe to radiator

Detailed Description

Dayco 72508 is a curved radiator coolant hose engineered for the lower pipe-to-radiator connection on 2003-2005 Honda Civic models. The EPDM rubber construction is suited for cooling-system temperatures and coolant exposure, while the curved profile helps the hose route correctly in the original factory location. If you are replacing a deteriorated Honda Civic lower radiator hose, this part number provides a straightforward OE-style service replacement. This part cross-references Honda 19502-PZA-000 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or split lower radiator hose
• Softening, swelling, or collapse of an aging coolant hose
• Improper hose routing after a previous repair
• Loss of cooling-system pressure from hose deterioration
• Visible wear, hardening, or surface checking on the original hose

Installation Notes and Tips

Verify the hose routing and end diameters before installation on your Honda Civic. Inspect the radiator neck, pipe connection, and clamps for corrosion or damage before installing the new hose. Drain coolant as needed, position the hose without twisting, and confirm a secure seal at both ends after refilling and bleeding the cooling system.

Quality Assurance

Dayco manufactures this curved radiator hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service. The 72508 is built for the listed Honda Civic fitment and follows the dimensions needed for the lower pipe-to-radiator application.