Four Seasons 74655 HVAC Heater Control Valve

Heater Control Valve for Acura and Honda

Four Seasons 74655 is an OE replacement HVAC heater control valve built for cable-operated temperature control systems. It uses a non-bypass, pull-to-close design with two hose connectors and a 0.625 in. (15.875 mm) opening for direct-fit service on select Acura TL and Honda Accord applications.

The Four Seasons Heater Valve line focuses on replacement valves that match original equipment function and connection style. This part number, 74655, is intended for vehicles that use a cable-operated heater valve rather than an electronic or vacuum-controlled design.

Key Features

• Cable-operated pull-to-close heater valve
• Non-bypass style for direct heater circuit control
• OE replacement design
• Plastic construction
• Two hose connectors
• 0.625 in. / 15.875 mm opening size

Detailed Description

Four Seasons 74655 is an HVAC heater control valve designed to regulate coolant flow through the heater core in cable-operated systems. It is a non-bypass valve, meaning it controls heater flow without routing coolant around the valve body. This makes it a direct OE-style service part for vehicles that require the original cable-actuated configuration. This part cross-references Genuine 79710SDAA01 for the same application.

Compatible With 2004-2010 Acura TL, Heater Valve, and 2003-2007 Honda Accord, Heater Valve. For buyers searching for a Honda Accord heater control valve or Acura TL heater valve replacement, Four Seasons 74655 matches the listed OE replacement application.

Common Issues This Part May Address

• Heater output stuck on hot or cold due to a failed valve
• Coolant flow not responding to cable movement
• Temperature control inconsistency at the cabin vents
• Leakage at the heater valve body or hose connections
• Loss of heater performance caused by restricted coolant flow

Installation Notes and Tips

Verify the vehicle uses a cable-operated, non-bypass heater valve before ordering. Match the hose connector count and opening size to the original part, and confirm the valve orientation and cable attachment points during installation. After replacement, refill and bleed the cooling system according to the vehicle service procedure to remove trapped air.

Quality Assurance

Four Seasons Heater Valve parts are built as OE replacement components for HVAC temperature control service. Part number 74655 is specified for direct-fit replacement use on the listed Acura and Honda applications.