Blower Motor Resistor - 1AHBR00035

Warranty & Shipping
How-To & Tools
Product Reviews
Vehicle Fit

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!


Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

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.”

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

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.

  1. step : 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. step : 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

5.00/ 5.0
5 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The Blower was easy to install and works great. I would recommend it to anyone who is having blower problems for their Ford Focus.
January 23, 2017
Easy, affordable fix!
Direct-fit replacement for the original resistor (2000 Ford Focus ZX3). My heater was only working on level 4. I replaced this part, and the heater works great again. (FYI: Its located directly behind the glove box, to the left.)
February 2, 2017
Blower Motor Resistor
The part was shipped and received in the expected window. Installation was a snap and now the blower motor and AC are back to functioning correctly. Its only been a week, but Id recommend the product. The video on the website was very helpful in guiding the installation.
July 15, 2017
Blower Motor Resistor for our 2003 Ford Focus
Excellent experience all around! Easy to use website. The part was shipped immediately and was exactly what wed ordered and worked great when I replaced the old resister with the new one from 1A Auto. Will definitely use them again when the need arises.
October 22, 2017
Easy to replace!
Once again the instructional video was excellent in assisting with the replacement of this part. Changed this resistor in conjunction with the blower assembly. Easy to do with impressive results. Works just like new. Thanks 1A!
January 4, 2019
Will this fit my car? Add a vehicle to make sure
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Year Make Model Description
1997-2000Ford Contour Ford Contour Blower Motor Resistor
2000-2007Ford Focus Ford Focus Blower Motor Resistor
2010-2013Ford Transit Connect Ford Transit Connect Blower Motor Resistor
1999-2002Mercury Cougar Mercury Cougar Blower Motor Resistor
1997-2000Mercury Mystique Mercury Mystique Blower Motor Resistor
Part #: 1AHBR00035

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(02:34 min)