OE Quality
60-Day Returns

Dorman 600-402 4WD Hub Locking Solenoid
Reliable 4WD Hub Locking Solenoid for Ford Super Duty Vehicles
The Dorman 600-402 4WD hub locking solenoid is designed to restore proper function to the four-wheel drive system in select Ford trucks. Engineered with durable metal and plastic housing, this solenoid ensures consistent performance for Ford Excursion, F-250 Super Duty, and F-350 Super Duty models.
- Terminal Type: Blade terminals for secure electrical connections
- Terminal Quantity: 3 terminals to support reliable wiring
- Housing Material: Combination of metal and plastic for durability and corrosion resistance
- Package Contents: Includes a 4WD vacuum actuator for direct replacement
- Wiring Harness: Not included, allowing compatibility with existing vehicle wiring
Durable Construction and Precise Fitment
The Dorman 600-402 solenoid features a robust metal and plastic housing designed to withstand harsh operating conditions commonly encountered in off-road and heavy-duty applications. The blade-type terminals provide a secure and stable electrical connection, minimizing the risk of signal loss or failure. This 4WD hub locking solenoid is specifically compatible with Ford Excursion, F-250 Super Duty, and F-350 Super Duty models, ensuring a precise fit and reliable operation within the vehicle’s driveline system.
Purpose and Common Applications
This 4WD hub locking solenoid is essential for engaging and disengaging the front wheel hubs in four-wheel drive systems. It helps address issues such as:
- Failure to engage 4WD hubs properly
- Intermittent or no response from the 4WD system
- Vacuum actuator malfunctions affecting hub locking
- Electrical connection problems due to worn terminals
- Corrosion or damage to the solenoid housing impacting performance
Installation Notes and Tips
Installation of the Dorman 600-402 solenoid requires basic mechanical skills and familiarity with the vehicle’s 4WD system. Ensure the vehicle is safely lifted and supported before beginning work. Disconnect the battery to prevent electrical shorts. Since the wiring harness is not included, verify the condition of existing wiring and connectors before installation. Properly align the solenoid and vacuum actuator to avoid vacuum leaks and ensure correct hub engagement.
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 600-402 4WD hub locking solenoid undergoes rigorous quality control to ensure consistent operation. Warranty coverage details can be obtained from the product documentation or Dorman’s official resources, offering peace of mind for professional and DIY repairs.
| Brand | Dorman |
| Part Number | 600-402 |
| Housing Material | Metal; Plastic |
| Package Contents | 4wd Vacuum Actuator |
| Terminal Quantity | 3 |
| Terminal Type | Blade |
| Wiring Harness Included | No |
This part fits 30 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2010 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2010 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2009 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2009 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2008 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2008 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2007 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2007 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2006 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2006 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2005 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2005 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2005 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2004 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2004 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2004 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2003 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2003 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2003 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2002 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2002 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2002 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2001 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2001 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2001 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 2000 | Ford | Excursion | 4WD | N/A | Vacuum Activated |
| 2000 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 2000 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
| 1999 | Ford | F-250 Super Duty | 4WD | N/A | Vacuum Activated |
| 1999 | Ford | F-350 Super Duty | 4WD | N/A | Vacuum Activated |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.