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Four Seasons 74650 HVAC Heater Control Valve
| Brand | Four Seasons 74650 |
|---|---|
| Description | Cable Operated Pull to Open Non-Bypass Heater Valve |
| Hose Connector Quantity | 2 Connectors |
| Material | Plastic |
| O.E. Replacement? | Yes |
| Opening B IN | 0.625 |
| Opening B MM | 15.875 |
| Opening IN | 0.625 |
| Opening MM | 15.875 |
| Operation Type | Cable |
| Style | Non-Bypass |
| Type | Heater Valves |
| Product line | Heater Valve |
| Fits | Toyota · 8 vehicles |
OE replacement. Direct-fit heater valve for straightforward installation.
Cable operated. Pull-to-open control gives precise coolant flow adjustment.
Non-bypass style. Plastic construction with two hose connectors.
Cross-references AP Exhaust 74650, UAC HV1227C and 277833 for the same application. See all 12.
Four Seasons 74650 Heater Valve Overview
The Four Seasons Heater Valve 74650 is an OE replacement HVAC heater control valve built for cable-operated temperature control systems. It uses a non-bypass design with two hose connectors and a 0.625 in. (15.875 mm) opening for direct coolant flow control in the heater circuit.
Compatible with select Toyota Tacoma and Toyota 4Runner applications, this Four Seasons heater valve is a practical replacement for restoring cabin heat control when the original valve is worn, sticking, or leaking. The Four Seasons Heater Valve line focuses on direct-fit HVAC temperature control components for service repairs.
Key Features
- Part number 74650
- Cable-operated pull-to-open design
- Non-bypass heater valve style
- Plastic construction
- Two hose connectors
- OE replacement heater valve
- 0.625 in. / 15.875 mm opening size
Detailed Description
Four Seasons 74650 is an HVAC heater control valve designed for cable actuation, allowing the driver-controlled heater circuit to open and close as the temperature lever is moved. Its non-bypass configuration routes coolant through the heater control path without a bypass function, making it a direct OE-style service part for vehicles that use this layout. This part number 74650 is listed for 2001-2004 Toyota Tacoma and 1999-2002 Toyota 4Runner heater valve applications.
This part cross-references UAC HV1227C for the same application.
What It Is Used For
- Restoring heater output when the valve no longer opens or closes correctly
- Replacing a leaking or cracked heater control valve
- Fixing inconsistent cabin temperature control
- Addressing restricted coolant flow through the heater circuit
- Replacing a worn cable-operated HVAC heater valve on Toyota Tacoma and Toyota 4Runner models
Installation Notes and Tips
Verify the vehicle uses a cable-operated, non-bypass heater valve before ordering. Match the hose connection layout and opening size to the original part, and inspect the control cable for smooth movement during installation. Confirm fitment for 2001-2004 Toyota Tacoma and 1999-2002 Toyota 4Runner before service.
Quality Assurance
Four Seasons supplies OE replacement HVAC components for temperature control service, and part 74650 is built to match the listed application requirements for direct replacement use.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | Toyota | Tacoma | N/A | Heater Valve |
| 2003 | Toyota | Tacoma | N/A | Heater Valve |
| 2002 | Toyota | 4Runner | N/A | Heater Valve |
| 2002 | Toyota | Tacoma | N/A | Heater Valve |
| 2001 | Toyota | 4Runner | N/A | Heater Valve |
| 2001 | Toyota | Tacoma | N/A | Heater Valve |
| 2000 | Toyota | 4Runner | N/A | Heater Valve |
| 1999 | Toyota | 4Runner | N/A | Heater Valve |
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