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Four Seasons 74649 HVAC Heater Control Valve
| Brand | Four Seasons 74649 |
|---|---|
| Bypass? | No |
| Description | Cable Operated Non-Bypass Closed 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 | Honda · 5 vehicles |
OE replacement. Cable-operated heater valve for a direct-fit service replacement.
Non-bypass style. Keeps coolant flow controlled with a closed-valve design.
Plastic construction. Lightweight material with two hose connectors for simple routing.
Cross-references Four Seasons 74649, Genuine 79710S84A01 and Global Parts Distributors LLC 8211290 for the same application. See all 16.
OE Heater Control Valve for Honda Accord
Four Seasons 74649 is an OE replacement HVAC heater control valve for 1998-2002 Honda Accord USA-built applications. It uses cable operation and a closed, non-bypass design to regulate heater coolant flow through the HVAC system.
Key Features
- Fits 1998-2002 Honda Accord, USA Built; Heater Valve
- Cable operated non-bypass closed heater valve
- Plastic construction for HVAC coolant routing
- Two hose connectors with 0.625 in. (15.875 mm) opening
- OE replacement design for direct application matching
- Four Seasons Heater Valve line, part number 74649
Product Details
Four Seasons 74649 is part of the Heater Valve product line and is built for temperature control service in the HVAC system. This heater control valve uses a cable-operated mechanism to open and close coolant flow to the heater core, helping maintain proper cabin heat control in the specified Honda Accord applications. The non-bypass style and closed-valve design match OE-style routing requirements for the listed vehicles. This part cross-references Genuine 79710S84A01 and MAHLE 5868 for the same application.
Common Repair Symptoms
- No heat or inconsistent cabin heat in a 1998-2002 Honda Accord
- Stuck heater valve that prevents coolant flow to the heater core
- Broken or binding cable-operated HVAC temperature control
- Coolant flow control issues at the heater hose connection
- OE-style replacement needed for a USA-built Accord heater valve
Installation Notes
Verify the vehicle is a 1998-2002 Honda Accord USA-built model before installation. Match the cable-operated layout, hose connector count, and 0.625 in. opening size to the original valve. Inspect heater hoses, cable movement, and coolant condition during replacement, and confirm proper HVAC temperature operation after installation.
Quality Assurance
Four Seasons 74649 is an OE replacement heater valve built to match the listed application requirements for fit and function in the HVAC temperature control system.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | Honda | Accord | 2.3L | L4 | N/A | USA Built; Heater Valve |
| 2001 | Honda | Accord | 2.3L | L4 | N/A | USA Built; Heater Valve |
| 2000 | Honda | Accord | 2.3L | L4 | N/A | USA Built; Heater Valve |
| 1999 | Honda | Accord | 2.3L | L4 | N/A | USA Built; Heater Valve |
| 1998 | Honda | Accord | 2.3L | L4 | N/A | USA Built; Heater Valve |
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