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Standard Ignition RU-381 HVAC Blower Motor Resistor - Front or Rear
Reliable HVAC Blower Motor Resistor for Ford, Lincoln, and Mercury
The Standard Ignition RU-381 HVAC blower motor resistor is designed to restore proper blower motor speed control in select Ford, Lincoln, and Mercury vehicles. Engineered for durability and precise fitment, this resistor ensures consistent HVAC performance in models like the Ford Explorer and Lincoln Aviator.
Key Features of the Standard Ignition RU-381
- Bolt-on attachment method for secure installation
- Female rectangular connector with 4 cavities
- Supports 3 to 5 blower motor speeds
- Includes mounting bracket(s) for easy setup
- Blade-type male terminals, 4 in total
- No wiring harness included, designed for direct connection
Detailed Product Description
The RU-381 blower motor resistor from Standard Ignition is engineered to regulate the blower motor speeds in HVAC systems of Ford, Lincoln, and Mercury vehicles, including the Expedition, Explorer Sport Trac, and Mountaineer. Featuring a bolt-on attachment method, this resistor offers a straightforward installation process. The female rectangular connector with four cavities ensures a secure electrical connection, while the blade-type male terminals provide reliable contact. This resistor supports multiple blower speeds, ranging from 3 to 5, allowing for precise climate control. The included mounting bracket(s) facilitate proper positioning within the HVAC system. Note that this part does not include a wiring harness or additional hardware, designed to integrate seamlessly with existing vehicle components.
Common Applications and Issues Addressed
- Restores blower motor speed control in Ford Explorer and Lincoln Aviator HVAC systems
- Resolves blower motor stuck on one speed or no speed
- Fixes intermittent blower motor operation or failure to operate
- Eliminates overheating issues related to faulty blower motor resistors
- Addresses inconsistent airflow from HVAC vents
Installation Notes and Tips
- Ensure vehicle compatibility with Ford, Lincoln, and Mercury models such as Aviator, Expedition, and Mountaineer before installation
- Disconnect the battery prior to installation to prevent electrical shorts
- Use the included mounting bracket(s) to secure the resistor firmly in place
- Verify the connector orientation matches the female rectangular connector with 4 cavities
- Check the blade-type male terminals for corrosion or damage before connecting
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The RU-381 blower motor resistor undergoes rigorous quality control testing to maintain consistent operation within HVAC systems. Please refer to Standard Ignition's warranty policy for specific coverage details.
| Brand | Standard Ignition |
| Part Number | RU-381 |
| Attachment Method | Bolt On |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Hardware Included | No |
| Harness Length - cm | No wire |
| Harness Length - inches | No wire |
| Mounting Bracket(s) Included | Yes |
| Number Of Connector Cavities | 4 |
| Number Of Speeds | 3-5 Speed |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Wiring Harness Included | No |
This part fits 26 vehicles. Search below:
| Year | Make | Model | # Doors | Position | Notes |
|---|---|---|---|---|---|
| 2007 | Ford | Explorer Sport Trac | Front | w/o Auto. Temp Control; To 12/06 | |
| 2007 | Mercury | Mountaineer | Rear | To 12/06 | |
| 2006 | Ford | Expedition | Front | Fitment: Excludes vehicles with automatic temperature control. | |
| 2006 | Ford | Explorer | Front | Not compatible with automatic AC systems. | |
| 2006 | Ford | Explorer | Rear | ||
| 2006 | Mercury | Mountaineer | Front | Not compatible with automatic AC systems. | |
| 2005 | Ford | Expedition | Front | w/ Manual Control | |
| 2005 | Ford | Explorer | Front | Not compatible with automatic AC systems. | |
| 2005 | Ford | Explorer | Rear | ||
| 2005 | Lincoln | Aviator | N/A | Fitment: Excludes vehicles with automatic temperature control. | |
| 2005 | Mercury | Mountaineer | Front | Not compatible with automatic AC systems. | |
| 2004 | Ford | Expedition | Front | w/ Manual Control | |
| 2004 | Ford | Explorer | Front | Not compatible with automatic AC systems. | |
| 2004 | Ford | Explorer | Rear | ||
| 2004 | Lincoln | Aviator | N/A | Fitment: Excludes vehicles with automatic temperature control. | |
| 2004 | Mercury | Mountaineer | Front | Not compatible with automatic AC systems. | |
| 2003 | Ford | Expedition | Front | w/ Manual Control | |
| 2003 | Ford | Explorer | 4 Door | Front | Not compatible with automatic AC systems. |
| 2003 | Ford | Explorer | 4 Door | Rear | |
| 2003 | Lincoln | Aviator | N/A | Fitment: Excludes vehicles with automatic temperature control. | |
| 2003 | Mercury | Mountaineer | Front | Not compatible with automatic AC systems. | |
| 2002 | Ford | Explorer | 4 Door | Front | Not compatible with automatic AC systems. |
| 2002 | Ford | Explorer | 4 Door | Rear | |
| 2002 | Mercury | Mountaineer | Front | Not compatible with automatic AC systems. | |
| 2001 | Mercury | Mountaineer | Rear | ||
| 2001 | Mercury | Mountaineer | Front | Fitment: Excludes vehicles with automatic temperature control. |
* 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.