Dorman 626-597 HVAC Heater Hose Assembly

Durable HVAC Heater Hose Assembly for Ford and Lincoln Vehicles

The Dorman 626-597 HVAC heater hose assembly is engineered to provide reliable heating system performance for select Ford and Lincoln models. Designed with precision, this molded steel hose assembly ensures efficient coolant flow and long-lasting durability.

• Constructed from durable steel with a black coated finish for corrosion resistance
• Features a molded assembly shape with two branches for precise fitment
• Quick connect attachment on one end and flange attachment on the other for secure installation
• Compatible with Ford F-150, Lincoln Mark LT, and Ford Mustang models
• Maximum working pressure of 100 PSI supports reliable heater system operation
• Centerline length of 5 inches with inside diameters of 0.59 and 0.63 inches

Technical Details and Specifications

This HVAC heater hose assembly (part number 626-597) is designed as a single inside diameter coolant hose without a heat shield, suitable for regular grade applications. The hose ends both have an outside diameter of 0.74 inches, ensuring a tight seal with the vehicle’s heating system components. The assembly does not include clamps or a protective sleeve but features a molded shape that matches factory specifications for a direct replacement. It contains no springs and is not thermostatically controlled, focusing on straightforward coolant transfer within the heating circuit.

Compatible Vehicles and Applications

This heater hose assembly is compatible with the following vehicles:

• Ford F-150
• Lincoln Mark LT
• Ford Mustang

It is designed to replace worn or damaged heater hoses in these models, restoring proper heater core function and preventing coolant leaks.

Common Issues Addressed by This Heater Hose Assembly

• Heater core coolant leaks due to cracked or deteriorated hoses
• Reduced heating efficiency caused by restricted or collapsed hoses
• Coolant loss from damaged or loose hose connections
• Overheating issues related to compromised heater hose integrity
• Replacement of factory hoses that no longer meet pressure requirements

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Verify hose end diameters and attachment types match vehicle specifications
• Use appropriate tools to disconnect quick connect and flange fittings carefully
• Inspect surrounding components for wear or damage during replacement
• Test the heating system after installation to confirm proper coolant flow and leak-free operation

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 626-597 heater hose assembly undergoes rigorous quality control to ensure durability and performance under normal operating conditions. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the supplier for exact warranty terms.