Blower Motor Resistor - 1AHBR00035

This part replaces:

  • OE # 3M5Z18591BA
  • Dorman 973-012
  • Standard Motor Products RU-427

  • New

This Resistor for the Blower Motor is a new, aftermarket replacement part. It is just what you need to bring your heating and A/C blower system back to good working order! On most vehicles it is mounted to the HVAC unit inside the passenger compartment. It can be accessed from the passenger foot well area.


  • New, not remanufactured or rebuilt
  • Direct replacement
  • Replaces dealer part numbers: 3M5Z 18591 BA, 3M5Z18591BA
  • Built to strict quality control standards
  • 100% tested prior to leaving the factory
  • 1 Plug
    • 4 Terminal connection

If you are experiencing intermittent stopping during use or the fan only works in one position this may be your solution!


These are electrical parts and are all tested before they leave our warehouse. This electrical item is not returnable, it is only eligible for exchange.

Left Hand Drive Note:

“All of our auto parts are intended for Left Hand Drive USDM vehicles and might not have been tested on Right Hand Drive platforms. If your vehicle is Right Hand Drive, please do your research prior to making a purchase to ensure the part is correct for your specific vehicle.”

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. Removing the Blower Motor Resistor (0:36)
    • Open the glove box
    • Push in the sides of the glove box and pull it down
    • Disconnect the resistor wiring harness
    • Remove the 8mm bolt from the resistor
    • Pull out the resistor
  2. Installing the New Blower Motor Resistor (1:25)
    • Put the new resistor into place
    • Insert the 8mm bolt into the new resistor
    • Connect the resistor wiring harness
    • Lift up the glove box, push in the sides, and push it in
    • Close the glove box

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 8mm Socket

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How-to Video:

(02:34 min)

Tools List:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 8mm Socket

This part replaces:

  • OE # 3M5Z18591BA
  • Dorman 973-012
  • Standard Motor Products RU-427

Vehicle Fit

  • 1997-2000 Ford Contour Blower Motor Resistor
  • 2000-2007 Ford Focus Blower Motor Resistor
  • 2010-2013 Ford Transit Connect Blower Motor Resistor
  • 1999-2002 Mercury Cougar Blower Motor Resistor
  • 1997-2000 Mercury Mystique Blower Motor Resistor
$ 22.95
Save 11%
List: $25.90 Save: $2.95
Part #: 1AHBR00035

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