Four Seasons 20481 HVAC Blower Motor Resistor - Front

Four Seasons Resistor Block 20481

Four Seasons 20481 is an HVAC blower motor resistor block for vehicles equipped with Automatic Temperature Control. It regulates blower motor speed in automatic A/C systems and uses a female square connector with 4 terminals for a direct electrical interface.

Key Features

• HVAC blower motor resistor block for variable-speed blower control
• Female connector with square shape
• 4-terminal design
• Built for automatic temperature control HVAC systems
• Four Seasons Resistor Block line for HVAC electrical replacement parts

Product Details

This Four Seasons resistor block is used in automatic climate control systems to manage blower motor speed across the available fan settings. It is listed for Ford F-150, Ford F-250, Ford F-350, Ford F-350 Super Duty, Ford Freestar, Ford Thunderbird, Lincoln LS, and Lincoln Mark LT applications with ATC or automatic A/C equipment. If you are replacing a failed blower motor resistor on a Ford F-150 or Ford F-350 with automatic temperature control, Four Seasons 20481 matches the specified connector and terminal layout for the application.

This part cross-references UAC SW11386C for the same application.

What It Helps Fix

• Blower motor stuck on one speed
• Loss of one or more fan speeds
• Intermittent HVAC blower operation
• No cabin airflow from the blower motor on selected settings
• Electrical resistance faults in automatic climate control blower circuits

Installation Notes

Verify the vehicle uses Automatic Temperature Control or automatic A/C before ordering. Match the female square connector and 4-terminal layout to the original part, and confirm the vehicle year, make, and model against the fitment list. For Ford F-150, Ford F-250, and Ford F-350 applications, the notes specify ATC or automatic A/C equipment, so the HVAC control system must match that configuration.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this resistor block is cataloged under the Four Seasons Resistor Block product line for direct-fit electrical replacement use.