Dayco 72758 HVAC Heater Hose - Reservoir To Engine

Dayco Curved Radiator Hose 72758

Dayco 72758 is a branched EPDM hose for coolant routing from the reservoir to the engine on select Ford Super Duty trucks. It is built for 2003-2007 Ford F-250 Super Duty and 2003-2007 Ford F-350 Super Duty applications with the curved radiator hose layout.

Key Features

• EPDM construction for coolant-system service
• Black hose finish
• Branched hose design for reservoir-to-engine routing
• End 1 inside diameter: 1 in.; End 2 inside diameter: 1 in.; End 3 inside diameter: 3/4 in.
• End 1 outside diameter: 1 3/8 in.; End 2 outside diameter: 1 3/8 in.; End 3 outside diameter: 3/4 in.
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 72758

Product Details

Dayco Curved Radiator Hose 72758 is a formed coolant hose built to match the reservoir-to-engine routing used on Ford Super Duty cooling systems. The EPDM rubber construction is suited for heater and radiator hose service, while the branched layout supports the multiple connection points called for in the application. This hose is a direct fit for 2003-2007 Ford F-250 Super Duty and 2003-2007 Ford F-350 Super Duty models in the reservoir to engine position. If you are replacing a worn or leaking Ford F-250 Super Duty radiator hose or sourcing a Dayco 72758 hose for a Ford F-350 Super Duty cooling repair, this part number identifies the correct formed hose configuration.

Dayco’s Curved Radiator Hose line focuses on shaped coolant hoses that follow factory routing and connection geometry. For technicians and owners working on Ford Super Duty cooling service, that means a hose profile that matches the vehicle’s original path instead of a universal cut-to-fit solution. Part number 72758 is specified for the listed Ford truck applications and should be matched to the vehicle’s hose routing and end sizes before installation.

Common Repair Uses

• Coolant seepage at the reservoir-to-engine hose
• Cracked or hardened EPDM hose material
• Collapsed or softened hose sections under heat and pressure
• Incorrect hose routing after prior cooling-system repair
• Replacement of a formed hose with the correct branched configuration

Installation Notes

Verify the hose routing, end diameters, and connection points against the vehicle before installation. Inspect adjoining fittings, clamps, and mating surfaces for wear or corrosion, and confirm the cooling system is properly drained and refilled according to service procedures. This hose does not include a heat shield or protective sleeve.

Quality Assurance

Dayco 72758 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for hose construction and performance. It is a formed replacement hose for the specified Ford Super Duty applications and is identified by Dayco part number 72758.