Help your HVAC blower run at the speed you select with this Four Seasons switch, the 20450 HVAC Blower Motor Resistor / Switch, which helps set fan speed by controlling the current sent to the blower motor. It fits many vehicles, among them the 2006-2012 Ford Fusion, 2007-2012 Lincoln MKZ and 2006-2011 Mercury Milan, and is a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list and engine details.
The part is listed under both names, HVAC blower motor resistor and switch. It works in the HVAC circuit between the fan-speed control and the blower motor, so each setting on the control delivers its own blower speed.
- OE-style connectors: plug in to the vehicle's wiring harness.
- Quality contacts: help maintain proper electrical conductivity.
- Precision engineered: built for vehicle-specific applications.
- Engineered and tested: backed by Four Seasons' more than 50 years of mobile A/C experience.
Signs this part may need replacing: the blower runs on some speed settings but not others, for example only on high, or the blower does not run at all. The blower motor, the control or the wiring can cause similar symptoms, so diagnose the circuit before replacing parts. If a failed resistor is the cause, the 20450 replaces it.
Interchange: 6E5Z18591AA · 1712399 · A07042 · MT18083 · SW11340C · JA1508
This part cross-references / interchanges with the following part numbers:
20450, 6E5Z18591AA, 1712399, A07042, MT18083, SW11340C, JA1508
