Dorman 626-684 HVAC Heater Hose Assembly

Durable HVAC Heater Hose Assembly for Ford Super Duty Models

The Dorman 626-684 HVAC heater hose assembly is engineered to provide reliable heating system performance for Ford Excursion, F-250 Super Duty, and F-350 Super Duty vehicles. Constructed from EPDM material, this molded hose assembly ensures consistent coolant flow and heat transfer within your vehicle's HVAC system.

• Constructed from durable EPDM rubber for heat and chemical resistance
• Black molded assembly with a centerline length of 416.2 mm
• Includes clamps for secure attachment at hose ends
• Four hose ends with 9 mm inside diameter and 16 mm outside diameter
• Designed for a maximum working pressure of 100 psi and burst pressure of 250 psi
• Compatible with Ford Excursion, F-250 Super Duty, and F-350 Super Duty models
• Regular grade type hose with a maximum bend angle of 15 degrees

Technical Details and Construction

The Dorman 626-684 heater hose assembly features a molded design that fits precisely within the HVAC system of select Ford Super Duty trucks and the Excursion. Made from EPDM, the hose resists heat, ozone, and coolant chemicals, ensuring durability under operating conditions. The assembly includes one branch and four hose ends, each with a consistent 9 mm inside diameter and 16 mm outside diameter, facilitating uniform coolant flow. Clamps are included on the first two hose ends for secure attachment, while the remaining ends use hose connections. This assembly is designed to handle a maximum working pressure of 100 psi and a burst pressure of 250 psi, suitable for typical HVAC system demands.

Compatible Vehicles and Applications

• Ford Excursion HVAC heater hose replacement
• Ford F-250 Super Duty heater hose assembly upgrade
• Ford F-350 Super Duty HVAC system maintenance
• Replacement for worn or leaking heater hoses in specified Ford models
• Resolving coolant leaks and restoring proper heater function

Installation Notes and Tips

When installing the Dorman 626-684 heater hose assembly, ensure the vehicle is cool and the cooling system is depressurized. Use the included clamps to secure the hose ends with clamp attachment types, and verify all connections are tight to prevent leaks. The molded hose shape and limited maximum bend angle of 15 degrees require careful routing to avoid kinks or stress points. Inspect the HVAC system for any additional worn components during installation to maintain optimal performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 626-684 heater hose assembly undergoes rigorous quality control to ensure durability and reliability in Ford Excursion, F-250 Super Duty, and F-350 Super Duty vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.