Four Seasons 20325 HVAC Blower Motor Resistor

HVAC Blower Motor Resistor Block

Restore proper blower fan operation with this Four Seasons resistor block, part number 20325. It is a fixed-speed HVAC blower motor resistor with a rectangular female connector, 4 terminals, and spade-style terminals for direct replacement in supported applications.

Compatible with Ford Crown Victoria and Mercury Grand Marquis models listed below, this resistor block meets or exceeds OEM requirements and is built for the HVAC blower motor resistor circuit used on vehicles without ATC in the specified 2005 application.

Key Features

• Four Seasons Resistor Block, part number 20325
• HVAC blower motor resistor for fixed speed #3 operation
• Female rectangular connector with 4 spade terminals
• Meets or exceeds OEM specifications
• Direct-fit replacement for select Ford Crown Victoria and Mercury Grand Marquis applications

Product Details

The Four Seasons Resistor Block line focuses on replacement HVAC electrical components for blower motor speed control. This part number 20325 is a resistor block style unit used to regulate blower motor output in supported Ford and Mercury vehicles. Cross-reference part numbers include UAC SW11263C and 4W7Z19A706A for the same application.

Fits 2006-2011 Ford Crown Victoria, N/A; ATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block. Fits 2006-2011 Mercury Grand Marquis, N/A; ATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block. Fits 2005 Ford Crown Victoria, N/A; w/o ATC (Automatic Temperature Control); From 2/05; Resistor Block. Fits 2005 Mercury Grand Marquis, N/A; w/o ATC (Automatic Temperature Control); Motor Resistor.

Common Issues This Part May Resolve

• Blower motor works on only one speed
• Loss of a specific fan speed setting
• Intermittent HVAC blower operation
• No cabin airflow from the blower motor on the affected speed circuit
• Electrical resistance failure in the blower motor control path

Installation Notes and Tips

Verify the connector shape, terminal count, and ATC configuration before installation. This part uses a female rectangular connector with 4 terminals and spade-style terminals, so harness match-up is important. Confirm the vehicle is one of the listed Ford Crown Victoria or Mercury Grand Marquis applications before replacing the resistor block.

Quality Assurance

This Four Seasons HVAC blower motor resistor meets or exceeds OEM specifications for the listed applications. Use the part number 20325 and the vehicle fitment details above to confirm the correct replacement before installation.