Standard Motor Products RU644 Blower Motor Resistor

The Standard Motor Products RU644 is a direct-fit replacement blower motor resistor designed to restore proper HVAC functionality in your vehicle. This essential component controls the electrical current flowing from the fan switch to the blower motor, allowing you to adjust fan speed settings for your heating and air conditioning system.

Key Features:

• 4-terminal design for precise current control
• Manufactured in IATF 16949 and ISO 9001 certified facilities
• Tin-plated steel terminals for maximum contact and conductivity
• High-quality ceramic construction with copper electrical connectors
• Engineered to meet or exceed OEM specifications
• Sample-tested for draw, resistance, and RPM performance

Standard Motor Products has been a trusted name in automotive aftermarket replacement parts since 1919. Each blower motor resistor undergoes rigorous 48-hour load testing and validation to ensure reliable, long-lasting performance under all operating conditions. When your blower motor only works on high speed or stops functioning altogether, this resistor provides a dependable solution to restore all fan speed settings.