Dorman 626-640 HVAC Heater Hose Assembly

Durable HVAC Heater Hose Assembly for Ford Super Duty Trucks

The Dorman 626-640 HVAC heater hose assembly is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. This molded branched hose assembly combines aluminum and rubber materials to ensure reliable coolant flow and heater performance under regular working conditions.

• Constructed with durable aluminum and rubber materials for strength and flexibility
• Includes clamps for secure installation
• Molded branched hose design with two branches for efficient coolant routing
• Compatible with quick connect, barbed, and hose attachment types
• Maximum working pressure of 100 PSI for dependable operation
• Centerline length of 23 inches to fit specified Ford Super Duty models

Technical Details and Specifications

The Dorman 626-640 heater hose assembly features a combination of black rubber and natural aluminum components, providing a balance of durability and flexibility. The hose ends vary in diameter to accommodate different connection types: 0.999 inch inside diameter with a quick connect attachment, 0.32 inch inside diameter with a barbed attachment, and 0.94 inch inside diameter with a hose attachment. The outside diameters measure 1.16 inches, 0.5 inches, and 1.4 inches respectively. This assembly is designed as a molded branched hose with two branches, allowing efficient coolant flow within the HVAC system of Ford F-250 and F-350 Super Duty trucks. Clamps are included to ensure a secure fit during installation.

Common Applications and Problem Resolution

• Replacement of worn or cracked heater hoses in Ford F-250 Super Duty and F-350 Super Duty HVAC systems
• Resolving coolant leaks that cause heater core inefficiency or engine overheating
• Addressing hose failures due to aging rubber or corrosion on metal components
• Improving coolant flow with a properly sized and molded hose assembly
• Maintaining HVAC system integrity for consistent cabin heating performance

Installation Notes and Tips

When installing the Dorman 626-640 heater hose assembly, ensure all old hoses and clamps are fully removed and the connection points are clean. Use the included clamps to secure each hose end firmly, paying attention to the different attachment types: quick connect, barbed, and hose. Verify the hose routing matches the original configuration to avoid kinks or stress points. It is recommended to inspect the HVAC system for any additional wear or damage during installation.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 626-640 heater hose assembly undergoes quality checks to ensure durability and performance under normal operating conditions. This part is backed by Dorman's standard warranty, providing coverage against defects in material and workmanship for a specified period. Refer to Dorman's warranty policy for detailed terms.