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Four Seasons 74857 HVAC Heater Control Valve
| Brand | Four Seasons 74857 |
|---|---|
| Description | Vacuum Closes 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 | Vacuum |
| Style | Non-Bypass |
| Type | Heater Valves |
| Product line | Heater Valve |
| Fits | Ford · 17 vehicles |
OE replacement. Vacuum-operated heater valve for straightforward replacement.
Non-bypass design. Controls coolant flow without routing it around the valve.
Plastic construction. Lightweight material suited to HVAC temperature control use.
Cross-references Four Seasons 74857, Hayden 5972 and 801025 for the same application. See all 13.
Four Seasons 74857 Heater Valve Overview
The Four Seasons Heater Valve 74857 is an OE replacement HVAC heater control valve built for vacuum-operated temperature control. It uses a non-bypass design with two hose connectors and a 5/8 in. opening, making it a direct-fit service part for select Ford truck and van applications.
Compatible With Ford F-150, Ford F-250, Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Windstar applications where the original heater valve uses vacuum operation and 5/8 in. hose connections. This Four Seasons 74857 part number is also cross-referenced to Hayden 5972 for the same application.
Key Features
- Vacuum closes non-bypass heater valve design
- OE replacement construction for factory-style service
- Plastic body material
- Two hose connectors
- 5/8 in. opening size, or 15.875 mm
- Fits vacuum-operated HVAC heater control systems
Product Details
Four Seasons Heater Valve line components are built for HVAC temperature control service where coolant flow through the heater core must be regulated by vacuum signal. Part number 74857 is a non-bypass heater valve that closes under vacuum, helping restore proper heater core flow control in vehicles equipped with the matching factory setup. It is listed as an OE replacement and is intended for direct service on the specified Ford applications.
Fits 2003-2004 Ford F-250, N/A, 5/8" x 5/8"; Heater Valve. Fits 2003-2004 Ford F-250 Super Duty, N/A, 5/8" x 5/8"; Heater Valve. Fits 2003-2004 Ford F-350 Super Duty, N/A, 5/8" x 5/8"; Heater Valve. Fits 1999-2002 Ford F-250 Super Duty, N/A, Heater Valve. Fits 1999-2002 Ford F-350 Super Duty, N/A, Heater Valve. Fits 1999 Ford F-150, N/A, Heater Valve. Fits 1997-1998 Ford Windstar, N/A, Heater Valve.
Common Repair Uses
- Restoring heater temperature control when cabin heat stays on or stays off
- Replacing a leaking or cracked heater control valve
- Correcting vacuum-controlled coolant flow issues in the HVAC system
- Addressing poor heater performance in Ford truck and Windstar applications
- Replacing a worn OE-style valve with the correct hose size and operation type
Installation Notes and Tips
Verify the original valve uses vacuum operation, a non-bypass layout, and 5/8 in. hose connections before installation. Match the hose connector count and opening size to the factory part, and inspect vacuum lines and coolant hoses for wear before reassembly. Confirm the vehicle application by year, make, and model, especially on Ford F-250, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford F-150, and Ford Windstar HVAC systems.
Quality Assurance
Four Seasons 74857 is an OE replacement heater valve designed for factory-style fitment and function in the listed applications. The Four Seasons Heater Valve line is used for HVAC temperature control service where accurate coolant flow management is required.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Ford | F-250 | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2004 | Ford | F-250 Super Duty | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2004 | Ford | F-350 Super Duty | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2003 | Ford | F-250 | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2003 | Ford | F-250 Super Duty | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2003 | Ford | F-350 Super Duty | — | — | N/A | 5/8" x 5/8"; Heater Valve |
| 2002 | Ford | F-250 Super Duty | — | — | N/A | Heater Valve |
| 2002 | Ford | F-350 Super Duty | — | — | N/A | Heater Valve |
| 2001 | Ford | F-250 Super Duty | — | — | N/A | Heater Valve |
| 2001 | Ford | F-350 Super Duty | — | — | N/A | Heater Valve |
| 2000 | Ford | F-250 Super Duty | — | — | N/A | Heater Valve |
| 2000 | Ford | F-350 Super Duty | — | — | N/A | Heater Valve |
| 1999 | Ford | F-150 | 5.4L | V8 | N/A | Heater Valve |
| 1999 | Ford | F-250 Super Duty | — | — | N/A | Heater Valve |
| 1999 | Ford | F-350 Super Duty | — | — | N/A | Heater Valve |
| 1998 | Ford | Windstar | — | — | N/A | Heater Valve |
| 1997 | Ford | Windstar | — | — | N/A | Heater Valve |
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