Replace an overheated or corroded resistor and its connector together with the Dorman HVAC blower motor resistor kit, part number 973-444, which pairs a new resistor with a harness pigtail. It fits many vehicles, among them the 2004-2014 Ford F-150, 2008-2012 Ford Escape and 2005-2009 Ford Mustang, and is cataloged for the front position. See the "Vehicles it fits" section for the full list.
The blower motor resistor sits in the blower motor circuit and controls the current that reaches the motor, which sets the fan speeds you choose on the climate controls. When the original overheats or its connector corrodes, some or all of those speeds may stop working. The new resistor comes with a harness pigtail so the connection can be replaced at the same time.
- Direct replacement: designed to take the place of the original equipment resistor and harness on the listed applications.
- Kit contents: each kit includes a resistor and a harness pigtail, which is essential for most repairs.
- OE-style performance: made to perform like the original equipment, helping return the HVAC fan to normal operation.
- Engineering support: backed by Dorman's team of engineers and quality specialists in the USA.
Signs this part may need replacing: the blower runs only on its highest setting, one or more fan speeds do nothing, or the blower does not run at all. A blower motor, switch or fuse can cause similar symptoms, so diagnose the cause before replacing parts.
Interchange: BMR012 · 4P1361 · RU1133 · 3F2Z18591AA · 20355 · RU440 · JA1499
This part cross-references / interchanges with the following part numbers:
BMR012, 4P1361, RU1133, 3F2Z18591AA, 20355, RU440, JA1499
Frequently Asked Questions
What does a blower motor resistor do?
It sits in the blower motor circuit and controls how much current reaches the motor. That sets the fan speeds selected on the climate controls.
What comes in the Dorman blower motor resistor kit?
Each 973-444 kit includes a resistor and a harness pigtail, so the connector can be replaced along with the resistor.
Which vehicles does the 973-444 fit?
It fits many vehicles, including the 2004-2014 Ford F-150, 2008-2012 Ford Escape and 2005-2009 Ford Mustang. The "Vehicles it fits" section shows every application.
What are signs of a failing blower motor resistor?
Common signs include a fan that works only on high, missing fan speeds, or no blower operation at all. A blower motor, switch or fuse can cause similar symptoms, so diagnose the cause first.
Why does the kit include a harness pigtail?
Dorman notes the harness pigtail is essential for most repairs. Including it lets you replace the connector along with the resistor instead of reusing the original connection.
