Dorman - OE Solutions HVAC Blower Motor Resistor Kit P/N:973-421
Replace an overheated or corroded blower resistor with the Dorman hvac blower motor resistor kit, part number 973-415, which pairs a new blower motor speed resistor with a harness pigtail. It fits many vehicles, among them the 2000-2007 Ford Focus, 1997-2000 Ford Contour and 1999-2002 Mercury Cougar. See the "Vehicles it fits" section for the full list and engine details.
A blower motor resistor sets the fan's lower speed settings by adding resistance to the blower motor circuit. A blower that runs only on its highest setting, or that skips one or more speeds, may mean the resistor needs replacing. A faulty switch, motor or wiring can cause similar symptoms, so diagnose the cause before you replace the part.
Interchange: 4P1579 · RU1120 · 3M5Z18591BA · F7RZ18591AA · YS4Z18591AA · YS4Z18591BA · 20043 · 2BMR0249 · RU427 · JA1702
This part cross-references / interchanges with the following part numbers:
Which vehicles does this Dorman blower motor resistor kit fit?
It fits many vehicles, including the 2000-2007 Ford Focus, 1997-2000 Ford Contour and 1999-2002 Mercury Cougar. Check the "Vehicles it fits" section for the full list.
What comes in the box?
Each kit includes a blower motor speed resistor and a harness pigtail.
What does a blower motor resistor do?
It controls the blower fan's lower speed settings by adding resistance to the blower motor circuit. This lets the fan run at more than one speed.
What are signs the resistor may need replacing?
A blower that works only on high, or that skips some speed settings, may mean the resistor has failed. A switch, motor or wiring fault can cause the same symptoms, so diagnose the cause first.
Is the Dorman blower motor resistor a direct replacement?
Yes. It is designed to directly replace the original equipment resistor on the listed applications and is made to perform like the original part.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.