Dayco 72257 Radiator Coolant Hose - Lower

Curved Lower Radiator Hose for Super Duty Cooling

Dayco 72257 is a curved radiator coolant hose built for lower cooling-system routing on select Ford Super Duty trucks. Made from EPDM with a black finish and a protective sleeve, it is shaped for the 2-inch inlet and outlet dimensions used in the listed applications.

This Dayco Curved Radiator Hose line focuses on OE-style replacement fit and routing for demanding cooling-system service. The hose follows the curved lower hose path needed on Twin I Beams applications and is built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.

Key Features

• EPDM construction for coolant-system durability
• Curved lower radiator hose design
• 2-inch inside diameter at both ends
• Protective sleeve included for added abrasion resistance
• Black finish for a clean OE-style appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC requirements
• Dayco 72257 radiator coolant hose for direct replacement use

Fitment Details

• Fits 2005-2007 Ford F-250 Super Duty, lower; Twin I Beams; Curved Radiator Hose.
• Fits 2005-2007 Ford F-350 Super Duty, lower; Twin I Beams; Curved Radiator Hose.

For shoppers searching for a lower radiator hose for 2005-2007 Ford F-250 Super Duty or 2005-2007 Ford F-350 Super Duty, Dayco 72257 matches the listed curved-hose application and 2-inch end dimensions. This part cross-references Ford 5C34-8B273-EH for the same application.

What It Helps Address

• Cracked or split lower radiator hose sections
• Coolant leaks at the hose connection points
• Heat-related hose hardening and deterioration
• Incorrect hose routing on Twin I Beams cooling layouts
• Restricted coolant flow caused by a damaged hose

Installation Notes and Tips

Verify the lower hose routing, end diameters, and vehicle configuration before installation. Inspect the radiator necks and engine-side connections for corrosion, residue, or damage, and replace worn clamps as needed during service. Confirm the hose follows the original curved path without twisting so the protective sleeve stays positioned correctly.

Quality Assurance

Dayco manufactures this radiator coolant hose to published SAE specifications for cooling-system service. The part number is 72257.