Get your fan speeds back with the Standard Ignition HVAC Blower Motor Resistor RU-435 (also written RU435). This resistor steps down current to the HVAC blower motor so the fan can run at its lower and intermediate settings, and it drops in as a direct-fit replacement for the 1986-1987 Acura Integra, 1986-1987 Honda Civic, and 1986-1987 Honda Wagovan. See the Buyer's Guide tab for engine-level details.
- Premium copper connectors: Uses premium copper electrical connectors for more precise resistance values, improving resistor performance and supporting a longer part life.
- HVAC-matched design: Developed to integrate seamlessly with the vehicle's HVAC system.
- Variable-speed control: Restores A/C and heater blower motor variable speed control, helping optimize HVAC performance and passenger comfort.
- Application-specific & tested: Specifically designed for Honda/Acura applications and put through extensive testing to confirm correct performance across conditions.
If a failed resistor is the reason your blower only works on the highest setting or has lost its lower speeds, this is the component that controls those steps. Diagnose the blower circuit before replacing to confirm the resistor is the cause.
Interchange: 39473SB2043 · RU1128 · BMRA244 · BR338
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this blower motor resistor do?
It steps down current to the HVAC blower motor, setting the fan's lower and intermediate speeds so you get A/C and heater variable speed control, not just high.
What vehicles does the RU-435 fit?
It's a direct-fit replacement for the 1986-1987 Acura Integra, 1986-1987 Honda Civic, and 1986-1987 Honda Wagovan. Check the Buyer's Guide tab to confirm your vehicle.
My blower only works on high. Is this the fix?
That's a common sign of a failed resistor, since it controls the lower speeds. Diagnose the blower circuit first to confirm the resistor is the cause before replacing.
What connectors does it use?
It uses premium copper electrical connectors for more precise resistance values, which improves resistor performance and supports a longer part life.
What numbers does this part interchange with?
It cross-references 39473SB2043, RU1128, BMRA244, and BR338.
Write a Review