Four Seasons 74662 HVAC Heater Control Valve

Jeep Heater Valve Control Replacement

The Four Seasons 74662 is a cable-operated non-bypass closed heater valve for HVAC temperature control systems. Built as an OE replacement in steel, it uses two hose connectors and a 0.625 in. (15.875 mm) opening for direct heater circuit control on select Jeep applications.

Four Seasons Heater Valve line parts are built for temperature-control service where accurate coolant flow management matters. This heater valve is a practical replacement for Jeep Cherokee, CJ5, CJ7, J10, J20, Scrambler, and Wagoneer models that use cable-actuated heater control.

Key Features

• Part number 74662
• Cable-operated HVAC heater control valve
• Non-bypass, closed style
• Steel construction
• Two hose connectors
• 0.625 in. / 15.875 mm opening
• OE replacement design

Detailed Description

This Four Seasons heater valve is designed for vehicles that regulate heater core flow through a cable-controlled valve rather than an electronic actuator. The non-bypass closed design helps control coolant routing through the heater circuit, supporting consistent cabin heat management in older Jeep HVAC systems. This part cross-references Unity Automotive 15180 for the same application.

Compatible With 1974-1983 Jeep Cherokee, 1972-1983 Jeep CJ5, 1959-1960 Jeep CJ5, 1976-1983 Jeep CJ7, 1974-1983 Jeep J10, 1974-1983 Jeep J20, 1981-1983 Jeep Scrambler, 1963-1983 Jeep Wagoneer, and 1966-1971 Jeep CJ5 with cable control and windshield defroster kit. The Four Seasons 74662 is a direct-fit style heater valve for these Jeep heating system applications.

Common Problems This Part Can Address

• Heater core flow that does not open or close correctly
• Cabin heat that stays on when the control is moved to cold
• Loss of heater control from a worn cable-operated valve
• Coolant routing issues in the heater circuit
• Replacement needs for aging Jeep HVAC temperature controls

Installation Notes and Tips

Verify hose size, cable operation, and valve orientation before installation. Match the 0.625 in. opening and two-connector layout to the original heater valve configuration, and confirm the control cable moves the valve through its full range without binding. On Jeep CJ5, CJ7, Cherokee, J10, J20, Scrambler, and Wagoneer applications, compare the original valve style and heater hose routing before final assembly.

Quality Assurance

Four Seasons supplies HVAC temperature-control components as OE replacement parts, and this heater valve is built to match the original cable-operated, non-bypass configuration used in the listed Jeep applications.