Four Seasons 37634 HVAC Blower Control Switch

Brand Four Seasons 37634
Voltage 12
Terminal Type Blade
Connector Shape Rectangular
Connector Gender Male
Terminal Gender Male
Amperage Rating 20
Description Switch-selector /toggle
Illuminated? No
Material Plastic / metal
Number of Terminals 4
Type Toggle
Weather Pack? No
Fits —

Selector switch. Toggle design with a rectangular male connector for straightforward replacement.

12-volt operation. Built for 20-amp circuits with blade terminals and a 4-terminal layout.

Plastic and metal construction. Combines durable materials in a compact HVAC control switch.

Cross-references BBB Industries 11592, Bosch 16596 and Bosch BE1020 for the same application. See all 83.

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Four Seasons 37634 HVAC Blower Control Switch

The Four Seasons Selector Switch 37634 is a 12-volt HVAC blower control switch built with a rectangular male connector, blade terminals, and a 20-amp rating. It is a non-illuminated toggle-style switch with a plastic and metal construction for direct replacement in blower speed control circuits.

Four Seasons Selector Switch line components are built for HVAC service work where accurate blower control and dependable electrical contact matter. This Four Seasons 37634 switch is a practical replacement for vehicles using a 4-terminal, male connector blower control layout.

Key Features

  • 12-volt HVAC blower control switch
  • Toggle-style selector switch for blower speed operation
  • 20-amp amperage rating
  • Rectangular male connector with 4 male terminals
  • Blade terminal type for straightforward electrical connection
  • Plastic and metal construction
  • Non-illuminated design

Product Details

This HVAC blower control switch is used to restore manual blower function in heating and air conditioning systems. The Four Seasons 37634 is a direct-fit style selector switch for applications that use a rectangular connector, 4-terminal layout, and 12-volt electrical system. It cross-references Bosch 16596 for the same application. Common search terms for this part include HVAC blower control switch, selector switch, and toggle blower switch for automotive HVAC repair.

What It Helps Fix

  • Blower motor only working on certain speed settings
  • Intermittent HVAC fan operation at the dash control
  • Worn or loose blower selector switch contacts
  • Broken or heat-damaged switch terminals
  • Loss of manual control over cabin airflow

Installation Notes and Tips

Verify the connector shape, terminal count, terminal gender, and amperage rating before installation. This part uses a rectangular male connector with blade-style male terminals, so matching the original switch layout is important for proper operation. Confirm the vehicle’s HVAC control configuration before ordering, especially on make/model-specific blower control repairs such as Ford F-150 and Chevrolet Silverado applications.

Quality Assurance

Four Seasons HVAC electrical components are built for replacement service in automotive climate control systems. Part number 37634 is specified as a 12-volt, 20-amp selector switch with the listed connector and terminal configuration for accurate fitment matching.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 83 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 11592Bosch — 16596Bosch — BE1020Four Seasons — 37634Hayden — 1040MTC/Ronak — 1028MTC/Ronak — 1030MTC/Ronak — 1044Walker Exhaust — 16663Walker Exhaust —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