Four Seasons 74765 HVAC Heater Control Valve

Four Seasons 74765 Heater Control Valve

Four Seasons 74765 is a cable operated HVAC heater control valve built as an OE replacement for temperature control systems that use a non-bypass closed design. With a steel body and two hose connectors, it is specified for direct heater hose routing in applications that require precise coolant flow control.

Use this Four Seasons Heater Valve when servicing a vehicle heater control system that needs a cable-actuated valve with a 0.500 in. opening B and 0.625 in. opening. The Four Seasons Heater Valve line is focused on replacement components for HVAC temperature control, and part number 74765 follows that OE-style service approach.

Key Features

• Part number 74765
• Cable operated HVAC heater control valve
• Non-bypass closed valve design
• Steel construction
• Two hose connectors
• OE replacement style
• Opening B: 0.500 in. (12.700 mm)
• Opening: 0.625 in. (15.875 mm)

Detailed Description

Four Seasons 74765 is an HVAC heater control valve used to regulate heater core coolant flow through a cable-operated control system. The non-bypass closed style is used in applications where the valve closes flow rather than routing coolant through a bypass path. This makes it a direct-fit service part for vehicles that rely on mechanical cable control for cabin heat management. This part cross-references Anchor 2219 and 2220 for the same application.

Common Issues This Part Can Address

• Heater output stuck on or stuck off
• Inconsistent cabin temperature control
• Coolant flow not responding to the dash control cable
• Leaking heater valve housing or hose connection area
• Restricted heater core coolant routing

Installation Notes and Tips

Verify the valve style, hose connector count, opening size, and cable operation before installation. Match the existing heater hose routing and control cable connection to the original valve configuration. After installation, check for proper cable travel, heater operation, and coolant leaks at both hose connections. Fits 2006-2011 Honda Civic, front right is not listed for this part; confirm vehicle-specific HVAC valve requirements before ordering. For Honda Civic, Accord, and similar HVAC heater control valve service applications, compare the original valve body and port dimensions to Four Seasons 74765.

Quality Assurance

Four Seasons lists this part as an OE replacement heater valve for HVAC temperature control service. The steel construction and cable-operated non-bypass design support direct replacement use in systems that call for this configuration. Part number 74765 is also referenced by interchange numbers used in the aftermarket for the same application.