Continental 64553 HVAC Heater Hose - Heater Control Valve To Tee-3

Continental HVAC Heater Hose for Ford Expedition

Continental Molded heater hose Part Number 64553 is built for coolant transfer between the heater core, bypass circuit, radiator, and related engine cooling components. It is a fitment-specific hose for 2005-2006 Ford Expedition models with an auxiliary heater and the Heater Control Valve To Tee-3 position.

Key Features

• Fits 2005-2006 Ford Expedition, Heater Control Valve To Tee-3
• Designed for heater-coolant routing in auxiliary heater applications
• 0.620 in. hose 1 inside diameter for the primary connection
• 11.900 in. hose 1 length for molded routing
• 0.690 in. end 2 hose inside diameter for the mating connection
• Built to SAE 20R3EC Class D1 and Class D2 specifications
• Resists electrochemical degradation for long-term coolant service

Detailed Description

This Continental 64553 HVAC heater hose is a molded replacement hose for coolant flow in the heater circuit. It is shaped for the 2005-2006 Ford Expedition with aux heater, helping route glycol-based coolant to and from the heater core, through the bypass path, and across other cooling-system components. The molded form and specified diameters support a direct replacement for the Heater Control Valve To Tee-3 location.

Continental’s Molded line focuses on formed coolant and heater hose applications where routing and fit are important. Part Number 64553 follows SAE 20R3EC Class D1 and D2 requirements and is engineered to resist electrochemical degradation, which is a common concern in coolant hose service. This part cross-references Ford OE-style numbers 5L1Z18471AC and KH711 for the same application.

What It Helps Address

• Coolant leakage at a worn heater hose connection
• Restricted heater-core coolant flow
• Cracked or softened hose material from heat and coolant exposure
• Poor heater performance caused by damaged coolant routing
• Incorrect hose shape or fit at the Heater Control Valve To Tee-3 position

Installation Notes and Tips

Verify the vehicle is a 2005-2006 Ford Expedition with auxiliary heater equipment before ordering. Match the molded routing, inside diameters, and connection points to the original hose layout, and inspect adjoining clamps, tees, and heater control valve fittings for wear before installation. Drain and refill coolant according to the vehicle service procedure after replacement.

Quality Assurance

Continental manufactures this heater hose to meet SAE 20R3EC Class D1 and D2 specifications and to provide resistance to electrochemical degradation in coolant service. Part Number 64553 is built for the specified Ford Expedition heater-circuit application.