Four Seasons 74624 HVAC Heater Control Valve

Four Seasons 74624 Heater Valve for Honda

Four Seasons 74624 is a cable-operated open non-bypass heater valve built as an OE replacement for select Honda heating systems. It uses a plastic body with two hose connectors and a 0.625 in. (15.875 mm) opening for direct-fit service on the listed applications.

Compatible with 1992-2000 Honda Civic and 1993-1995 Honda Civic del Sol heater control systems, this Four Seasons Heater Valve supports accurate coolant flow control through the HVAC circuit. The Four Seasons Heater Valve line is focused on replacement temperature-control components for vehicles that use factory-style heater valve operation.

Key Features

• Cable-operated open non-bypass heater valve
• OE replacement design for factory-style service
• Plastic construction
• Two hose connectors
• 0.625 in. / 15.875 mm opening
• Non-bypass style for direct heater circuit control

Detailed Description

Part number 74624 is an HVAC heater control valve designed for vehicles that use a cable-actuated heater valve rather than an electronic or vacuum-operated unit. Its non-bypass configuration routes coolant through the heater circuit as specified by the vehicle’s original design, helping maintain proper cabin heat control. This part cross-references Carlson H814 for the same application.

For Honda Civic and Honda Civic del Sol applications, 74624 provides a factory-style replacement option when the original heater valve is worn, leaking, or no longer opening and closing correctly. The compact plastic housing and OE replacement fitment make it a practical service part for restoring HVAC temperature control.

What It Helps Fix

• Coolant leaking from the heater valve body
• Weak or inconsistent cabin heat
• Heater valve stuck open or stuck closed
• Broken or binding cable-operated valve movement
• Loss of proper coolant flow control through the heater circuit

Installation Notes and Tips

Verify the vehicle uses a cable-operated, non-bypass heater valve before installation. Match the hose connector layout and 0.625 in. opening size to the original part, and inspect heater hoses, clamps, and cable routing during service. Fits 1992-2000 Honda Civic, N/A. Fits 1993-1995 Honda Civic del Sol, N/A.

Quality Assurance

Four Seasons heater valves are built as OE replacement HVAC components for direct service on listed applications. Confirm fitment by year, model, and heater valve style before ordering.