Standard Ignition HVAC Blower Motor Resistor P/N:RU-870
Give your A/C and heater blower the resistance it needs for each speed setting with the Standard Ignition RU-636. It is a direct-fit Ford Explorer blower motor resistor for 2007-2010 models, and it also fits the 2007-2010 Ford Explorer Sport Trac and 2007-2010 Mercury Mountaineer. It is designed specifically for Ford applications and is cataloged for both the front and rear positions.
A blower motor resistor sets the current sent to the blower motor, which gives the fan its range of speed settings. If a failed resistor is why your fan has lost speeds, this unit is intended to bring back variable-speed control to the heater and A/C and support passenger comfort.
See the Buyer's Guide tab for engine details and the full fitment chart.
Interchange: RU1326 · JA1711 · BR537 · 7L2Z19A706A
This part cross-references / interchanges with the following part numbers:
What does an HVAC blower motor resistor do?
It sets the current sent to the blower motor, so the heater and A/C fan can run at its different speed settings instead of only one speed.
What are signs the blower motor resistor may need replacing?
Signs include a fan that runs only on the highest setting or skips some speeds. Diagnose the cause first, because switch or wiring faults can cause similar symptoms.
What does the built-in fuse do?
It protects against resistor failure caused by an excessive electrical current surge. This helps prevent damage to the blower motor and other components.
Is this the right blower motor resistor for a 2008 Ford Explorer?
Yes. The RU-636 is listed as a direct-fit replacement for the 2007-2010 Ford Explorer, which includes the 2008 model year.
What are the terminals and connectors made of?
It uses tin-plated steel terminals for corrosion resistance and conductivity. It also has copper electrical connectors for precise resistance values.
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.