Manage the hot coolant that feeds your heater core with the Four Seasons heater control valve 74620, a cable-operated, open non-bypass unit. It is listed for vehicles from 1988 to 2004, among them the 1997-1998 Honda CR-V, 1988-1995 Honda Civic and 1988-1995 Toyota 4Runner, as a direct-fit replacement for the listed applications.
Four Seasons describes the 74620 as a cable-operated open non-bypass heater valve. When you move the dash temperature control, a cable opens or closes the valve. That sets how much engine coolant reaches the heater core, and so how much heat enters the cabin.
- Cable-operated design: actuated by the vehicle's heater control cable.
- Temperature tested: checked to 270 degrees F.
- Pressure tested: tested to help ensure a leak-free design.
- Application-specific design: built for the listed applications.
Four Seasons brings more than 50 years of mobile A/C experience to its climate-control parts.
An HVAC heater control valve may need replacing if you notice little or no cabin heat, heat that stays on when the control is set to cold, or coolant seeping at the valve. Diagnose the cause first. If a failed valve is behind the problem, this unit replaces it.
See the "Vehicles it fits" section for engine details and the full application list.
Frequently Asked Questions
Is this a 1988-1995 Toyota 4Runner heater control valve?
Yes. It is listed for the 1988-1995 Toyota 4Runner and also for the 1990-1995 Toyota Pickup. See the "Vehicles it fits" section for engine details on your truck.
Will it work as a 1988-1995 Honda Civic heater control valve?
It is listed for the 1988-1995 Honda Civic. It is also listed separately for the 1996-1997 Honda Civic del Sol. Check the "Vehicles it fits" section for engine details.
What does a heater control valve do?
It regulates how much engine coolant flows to the heater core. On this cable-operated valve, the dash temperature control moves a cable that opens or closes it.
What are signs the heater control valve may need replacing?
Common signs include little or no cabin heat, heat that won't shut off, or coolant leaking at the valve. Other parts can cause the same symptoms, so diagnose the cause first.
How is the Four Seasons 74620 tested?
Four Seasons temperature tests this valve to 270 degrees F. It is also pressure tested to help ensure a leak-free design.
