Standard Motor Products RU235 HVAC Blower Motor Resistor

The Standard Motor Products RU235 is a direct-fit replacement HVAC blower motor resistor engineered to restore proper multi-speed fan operation to your vehicle's heating and air conditioning system. The blower motor resistor regulates the electrical current flowing from the fan speed switch to the blower motor, enabling the selection of multiple fan speeds from low to high.

Built to meet or exceed OEM specifications, this resistor is manufactured from all-new components — no remanufactured or recycled parts — ensuring reliable, long-term performance. It is designed for a direct plug-and-play installation, making it a straightforward replacement for a failed or degraded original unit.

Key Features:

• Controls blower motor fan speed by regulating electrical current from the fan switch
• Manufactured to meet or exceed original OEM specifications
• 100% new construction — no remanufactured components
• Direct-fit, plug-and-play replacement design
• Sold individually

A faulty blower motor resistor commonly causes the HVAC fan to operate only at the highest speed setting or to stop working altogether. Replacing the RU235 restores full multi-speed fan functionality for both heating and air conditioning.