Four Seasons
Resistor Block

Four Seasons 20477 HVAC Blower Motor Resistor

Brand Four Seasons 20477
Connector Gender Female
Connector Shape Rectangular
Description Resistor Block
Number of Terminals 4
Speed Fixed # 3
Type Switches
Product line Resistor Block
Fits Mazda · 7 vehicles

Resistor block. Provides fixed 3-speed blower control.

Rectangular connector. Female 4-terminal design for a secure electrical connection.

HVAC blower motor resistor. Controls blower motor speed in the HVAC system.

Cross-references Four Seasons 20477, A06827 and BVTB61B15 for the same application. See all 4.

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Four Seasons 20477 Resistor Block for Mazda 3

Four Seasons 20477 is an HVAC blower motor resistor block with a female rectangular connector and 4 terminals. It provides fixed speed #3 control for the blower circuit on select Mazda 3 applications, including models without air conditioning.

Key Features

  • Resistor Block design for HVAC blower motor speed control
  • Female rectangular connector for a direct electrical interface
  • 4-terminal configuration
  • Fixed speed #3 operation
  • Four Seasons part number 20477

Fitment Details

Fits 2008-2009 Mazda 3, N/A, compatible with models that do not have air conditioning; Resistor Block. Fits 2009 Mazda 3 Sport, N/A, compatible with models that do not have air conditioning; Resistor Block. Fits 2006-2007 Mazda 3, N/A, w/o AC; Motor Resistor. Fits 2005 Mazda 3, N/A, Resistor Block. Fits 2004 Mazda 3, N/A, Motor Resistor.

This part cross-references A06827 and BVTB61B15 for the same application.

What It Is Used For

  • Restoring blower motor speed control when one fan setting stops working
  • Replacing a damaged or heat-worn HVAC resistor block
  • Correcting intermittent cabin fan operation on Mazda 3 models
  • Addressing blower speeds that only work on certain settings

Installation Notes and Tips

Verify the connector shape, terminal count, and vehicle configuration before installation. This resistor block is listed for Mazda 3 and Mazda 3 Sport applications without air conditioning in the specified model years. Confirm the HVAC connector and resistor style match the original part number 20477 before replacement.

Quality Assurance

Four Seasons supplies HVAC replacement components for service applications, and this resistor block is cataloged to match the listed fitment and electrical configuration for the specified Mazda vehicles.

This part fits 7 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2009Mazda3N/ACompatible with models that do not have air conditioning.; Resistor Block
2009Mazda3 SportN/ACompatible with models that do not have air conditioning.; Resistor Block
2008Mazda3N/ACompatible with models that do not have air conditioning.; Resistor Block
2007Mazda3N/Aw/o AC; Motor Resistor
2006Mazda3N/Aw/o AC; Motor Resistor
2005Mazda3N/AResistor Block
2004Mazda3N/AMotor Resistor
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 20477A06827BVTB61B15JA1672