Dayco 87760 HVAC Heater Hose - Heater To Thermostat

Dayco 87760 Small I.D. Heater Hose

Dayco 87760 is a branched HVAC heater hose built for heater circuit routing where multiple hose sizes are required in one assembly. Made from EPDM and finished in black, it is sized for 5/8 in. and 3/4 in. connections and follows SAE J20R3 Class D-1 and SAE J1684 Type EC specifications.

This Small I.D. Heater Hose line is designed for applications that need a compact, branched layout rather than a straight hose run. For 1987-1993 Ford Aerostar heater-to-thermostat service, Dayco 87760 matches the listed configuration with A.C. and auxiliary heater equipment.

Key Features

• EPDM construction for heater hose service
• Black finish for a factory-style appearance
• Branched hose design for multi-port routing
• End sizes: 5/8 in., 3/4 in., and 5/8 in.
• Built to SAE J20R3 Class D-1 and SAE J1684 Type EC standards
• Small I.D. Heater Hose line for compact HVAC plumbing

Detailed Description

Dayco 87760 is an HVAC heater hose assembly engineered for heater-to-thermostat routing where the system uses a branched configuration. The EPDM rubber construction is suited to coolant circulation in the heater circuit, while the 6 1/2 in. trunk height and small inside diameters support tight underhood packaging. This part number is listed for 1987-1993 Ford Aerostar applications with A.C. and auxiliary heater equipment, making it a direct-reference choice for Ford Aerostar heater hose replacement work. Dayco 87760 also cross-references Ford E69Z-18472-R for the same application.

Common Problems It Can Address

• Cracked or split heater hose sections
• Coolant seepage at branched hose connections
• Restricted heater coolant flow from aged rubber hose
• Incorrect hose sizing in heater-to-thermostat routing
• Replacement needs on 1987-1993 Ford Aerostar heater circuits

Installation Notes and Tips

Verify the hose routing, end diameters, and branch layout before installation. This part is listed for heater-to-thermostat placement on 1987-1993 Ford Aerostar models with A.C. and auxiliary heater equipment. Inspect adjoining clamps, thermostat housing connections, and heater pipe ends for wear or corrosion before installing Dayco 87760.

Quality Assurance

Dayco manufactures this heater hose to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and dimensional requirements for HVAC hose service.