Dial in cabin comfort by regulating how much hot engine coolant reaches the heater core with the Four Seasons HVAC Heater Control Valve (MPN 74620). This cable-operated valve is an application-specific, direct-fit replacement for a wide range of Honda, Acura and Toyota models, including the 1990-2001 Acura Integra, 1991-1995 Acura Legend, 1996-2004 Acura RL, 1988-1995 Honda Civic, 1996-1997 Honda Civic del Sol, 1997-1998 Honda CR-V, 1988-1991 Honda CRX, 1992-2001 Honda Prelude, 2000-2001 Honda S2000, 1988-1995 Toyota 4Runner and 1990-1995 Toyota Pickup (engine: All) — see the Buyer's Guide tab for the full list.
- Cable-operated design: the heater cable moves the valve to open or close coolant flow to the heater core.
- Non-bypass, open style: two connectors and a non-bypass configuration for the listed applications.
- Plastic construction: temperature tested to 270°F and pressure tested for a leak-free design.
Mounted in the heater coolant line, the valve controls how much hot coolant enters the heater core, which sets cabin heat output. If a stuck or leaking heater control valve is the cause of no heat, heat that won't shut off, unresponsive temperature control or a coolant leak, this replaces it. Diagnose the cause before replacing. Manufacturer part number 74620.
