Dial in every fan setting with the Standard Ignition HVAC Blower Motor Resistor RU-303, the rear 1984-1988 Toyota 4Runner blower motor resistor that steps the blower motor circuit through its different speeds. It drops in as a direct-fit replacement for the 1984-1988 Toyota 4Runner — see the "Vehicles it fits" section for engine-level details.
A blower motor resistor adds resistance to the fan circuit so the blower can run at low and medium settings instead of full blast. If a failed resistor is the cause of a blower that only works on high — or won't run on certain speeds — this replaces it.
Interchange: RU1003 · JA1371 · BR213 · 8863589104 · 8863589106
This part cross-references / interchanges with the following part numbers:
What does the Standard Ignition RU-303 do?
It is the rear blower motor resistor that adds resistance to the blower circuit, letting the fan run at low and medium speeds instead of only high.
Where is this blower motor resistor located?
This is the rear blower motor resistor. Check the vehicle service information for its exact location before servicing.
What are the signs this resistor may need replacing?
Common signs include a blower that works on only one speed (often high), missing fan speeds, or an intermittent blower. Diagnose the cause, as switches and wiring can also be at fault.
Which vehicle does the RU-303 fit?
It is a direct-fit replacement for the 1984-1988 Toyota 4Runner. See the "Vehicles it fits" section to confirm fitment for your vehicle.
What part numbers does the RU-303 replace?
It cross-references RU1003, JA1371, BR213, 8863589104, and 8863589106. Match your original part number to confirm the correct replacement.
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Standard Motor Products
Standard Motor Products
Standard Motor Products
Standard Motor Products
Standard Motor Products
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.
