Four Seasons HVAC Blower Motor Resistor 20901
Four Seasons HVAC Blower Motor Resistor 20901 - view 2
Four Seasons HVAC Blower Motor Resistor 20901 - view 3
Four Seasons HVAC Blower Motor Resistor 20901
Four Seasons HVAC Blower Motor Resistor 20901 - view 2
Four Seasons HVAC Blower Motor Resistor 20901 - view 3

Four Seasons HVAC Blower Motor Resistor P/N:20901

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$24.99
MPN: 20901
Item Package Quantity: 1
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Four Seasons HVAC Blower Motor Resistor P/N:20901
Four Seasons HVAC Blower Motor Resistor P/N:20901
$24.99

Designed to manage blower fan speeds in the cab, this Four Seasons switch is the HVAC Blower Motor Resistor / Switch 20901. It reduces the voltage sent to the blower motor to provide the lower fan-speed settings for the heating and A/C system. It fits many truck models, among them the 1996-1999 Kenworth T400, 2010 Kenworth L700 and 1995-2005 Peterbilt 330. See the Buyer's Guide tab for the full list of compatible vehicles and engines. The part is cataloged under both names, HVAC blower motor resistor and switch.

  • Vehicle-specific applications: Built for the listed trucks.
  • Quality contacts: Designed for proper electrical conductivity.
  • Precision engineered: Four Seasons engineers and tests it, drawing on more than 50 years of mobile A/C experience.
  • OE-style connectors: Connectors styled after the original equipment.

Signs this part may need replacing: the blower runs only on its highest setting, some fan speeds stop working, or the blower does not run at all. A failed blower motor, control switch or wiring fault can cause similar symptoms, so diagnose the cause before replacing. If the resistor has failed, the 20901 replaces it.

Frequently Asked Questions

What does the Four Seasons 20901 do?

It is an HVAC blower motor resistor that reduces the voltage reaching the blower motor. This provides the lower fan-speed settings for the heating and A/C system.

Does it fit a 1996-1999 Kenworth T400?

Yes. The 1996-1999 Kenworth T400 is among the listed applications, along with the 2010 Kenworth L700 and 1995-2005 Peterbilt 330. The Buyer's Guide tab has the full list.

Why is this part listed as a switch?

It is cataloged under both names, HVAC blower motor resistor and switch, so you may find it under either one when searching.

What are signs a blower motor resistor may need replacing?

Signs include a blower that runs only on high, missing fan speeds, or no blower at all. A bad blower motor, switch or wiring can cause the same symptoms, so diagnose the cause first.

What connectors and contacts does it have?

It has OE-style connectors and quality contacts designed for proper conductivity. Four Seasons builds it for vehicle-specific applications.

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