Universal Air SW9973C HVAC Blower Motor Resistor - Front

HVAC Blower Motor Resistor for Ford and Mercury

Universal Air SW9973C is an HVAC blower motor resistor for vehicles with manual blower speed control. It is used in systems that do not use Automatic Temperature Control, and it supports the front HVAC application where listed. This blower resistor is a direct-fit service part for select Ford Explorer, Ford Expedition, Ford Explorer Sport Trac, Mercury Mountaineer, and Lincoln Aviator models.

Key Features

• HVAC blower motor resistor for manual climate control systems
• Fits front HVAC applications where specified in the vehicle listing
• Supports dual zone temperature control on select Ford Explorer applications without Automatic Temperature Control
• Application-specific fitment for select Ford Explorer, Ford Expedition, Ford Explorer Sport Trac, Mercury Mountaineer, and Lincoln Aviator models
• Part number SW9973C for ordering and catalog lookup

Detailed Description

Universal Air Blower Resistor SW9973C is built for select Ford and Mercury HVAC systems that rely on a resistor to regulate blower motor speed. It fits 2006-2007 Ford Explorer, front, with Dual Zone Temperature Control and without Automatic Temperature Control; 2007 Ford Explorer Sport Trac, front; 2006-2007 Mercury Mountaineer; 2006 Ford Expedition, front, without Automatic Temperature Control; 2003-2005 Ford Expedition, front, not compatible with Automatic Temperature Control; 2002-2005 Ford Explorer; 2003-2005 Lincoln Aviator with Manual A/C Controls; and 2002-2005 Mercury Mountaineer, not compatible with Automatic Temperature Control. Use SW9973C when replacing a failed blower resistor in a manual HVAC system on these Ford Explorer and Mercury Mountaineer applications.

Common Issues This Part Can Address

• Blower motor works on only one speed
• Loss of low, medium, or high fan settings
• Intermittent cabin airflow from the vents
• No response from the HVAC blower speed control
• Resistor failure in manual climate control systems

Installation Notes and Tips

Verify the vehicle’s HVAC control type before ordering. This part is not for Automatic Temperature Control systems where noted in the fitment data. Confirm the model year, trim, and front HVAC configuration against the listing before installation. Inspect the blower motor connector and related wiring for heat damage or corrosion when replacing the resistor.

Quality Assurance

Universal Air SW9973C is cataloged as a blower resistor for the listed Ford, Mercury, and Lincoln applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.