Standard Ignition RU-454 front blower motor resistor for the 2002-2010 Lexus SC430 and other vehicles sets the speed of the heater and A/C blower motor. It is intended to restore variable blower speed control when a worn resistor is the cause.
A blower that runs on only some speeds, or not at all, can have several causes. Before replacing the resistor, look at its connector with the engine off for melting, burn marks or corroded terminals, since a damaged plug or a worn blower motor can show similar symptoms.
This resistor is designed for Lexus and Toyota applications and fits the 2002-2010 Lexus SC430, the 1998-2007 Toyota Land Cruiser and the 2001-2005 Lexus GS430, among other models. The 2002-2010 Lexus SC430 takes one, and this listing is a single resistor.
Fit and size
Build and materials
One blower motor resistor with its mounting bracket. The wiring harness and mounting hardware are not included, so plan on new mounting bolts rather than reusing the old ones.
Interchange: RU1147 · JA1669 · BR357 · 8716522040 · 8716522050
This part cross-references / interchanges with the following part numbers:
Is this the right blower motor resistor for a 1998-2007 Toyota Land Cruiser?
Yes, Standard Ignition RU-454 fits the 1998-2007 Toyota Land Cruiser, as well as the 2002-2010 Lexus SC430. If your car is a different model, look it up in the "Vehicles it fits" section on this page.
Does the Standard Ignition RU-454 come with a wiring harness?
No. The Standard Ignition RU-454 comes with its mounting bracket, but the wiring harness and mounting hardware are not included.
Is this HVAC blower motor resistor a 3-5 speed unit?
Yes. It is listed as a 3-5 speed resistor with a rectangular connector that has 5 cavities and blade terminals.
My blower only works on some speeds: could the front blower motor resistor be involved?
Yes, a worn resistor can limit the blower to some speeds, though other faults can do the same. A shop can test it with the system running.
Does the RU-454 replace part number 8716522040?
Yes. 8716522040 is a listed interchange for this resistor, along with 8716522050, RU1147, JA1669 and BR357.
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