Help bring back every fan setting on your dash with the Standard Ignition blower motor resistor for the 2008-2011 Ford Focus, MPN RU-709. It drops in as a direct-fit replacement for the 2008-2011 Ford Focus, where the resistor steps the voltage sent to the blower motor so the fan runs at each of its lower speeds. When only the highest speed works — or several speeds drop out entirely — a failed resistor may be the cause, and if that resistor is the culprit, RU-709 replaces it.
Its research-driven design targets seamless integration with the vehicle's HVAC system. If you're chasing a stuck fan speed on your 2009 Ford Focus or 2008 Ford Focus, this is the part to check.
Interchange: RU1398 · JA1745 · BR609 · 8S4Z18591A
This part cross-references / interchanges with the following part numbers:
What does this blower motor resistor do?
It steps down voltage to the HVAC blower motor so the fan can run at its lower speeds. Without a working resistor, you often lose all but the highest fan setting.
Does the RU-709 fit my 2008-2011 Ford Focus?
It is a direct-fit replacement for the 2008-2011 Ford Focus. Confirm your vehicle in the Buyer's Guide tab before ordering.
My fan only blows on high — is this the fix?
Losing the low fan speeds is a common sign of a failed blower motor resistor. If the resistor is the cause, this replaces it; diagnose the circuit first to be sure.
Is a fan resistor the same as an HVAC blower motor resistor?
Yes — a blower motor resistor is also called a fan resistor. RU-709 handles the blower speed control on the listed applications.
What other part numbers does the RU-709 replace?
It interchanges with RU1398, JA1745, BR609 and 8S4Z18591A.
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.
