bing tracking image
  1. Accessories and Parts
  2. Flex-a-lite
  3. Radiator Fans
  4. Thermostat
Flex-a-lite Adjustable Temperature Controller for Electric Fan

Flex-a-lite Adjustable Temperature Controller for Electric Fan

Item # FLX31149
lowest price pledge
Our Price: $156.37
Accessories and Parts
This item qualifies for Free Shipping
Shipping Weight: 2 lbs

This product is not in stock

FLX31149 - Thermostat Flex-a-lite Accessories and Parts
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images


Need help with installation?
Locate installers near me
1-833-496-1390 to order Flex-a-lite accessories and parts part number FLX31149 or order online at Free expert support on all Flex-a-lite products. Guaranteed Lowest Price and Fastest Shipping for Flex-a-lite Adjustable Temperature Controller for Electric Fan. Accessories and Parts reviews from real customers.
  • All Info
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Flex-a-lite Accessories and Parts - FLX31149

  • Radiator Fans
  • Thermostat
  • Flex-a-lite

The Flex-a-lite cooling control module uses a stainless steel probe to sense engine coolant temperature to activate an electric fan. It also turns the electric fan on when the vehicle air conditioner is engaged.

  • Designed for 12-volt systems
  • 40 amp rating at startup

31149 Flexalite Adjustable Temperature Controller for Electric Fan


Installation Details FLX31149 Installation instructions

Video of Flex-a-lite Adjustable Temperature Controller for Electric Fan

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Flex-a-lite Radiator Fans FLX31149 Review

Today we're going to look at the Flex-a-Lite temperature control module for the 12 volt electric fan. This Flex-a-Lite cooling control module uses the stainless steel probe to sense your engine coolant temperature to activate an electric fan. It also turns the electric fan on when the vehicle air conditioner's engaged. It does combine temperature control and air conditioning control relay plus connection for manual switch. This part is designed for 12 volt systems. It has a 40 amp rating at start up.

It does include everything shown here. It includes the control module with the probe, all the wiring and the connectors. The fuse holder with the choice of fuses and a nice set of in detail installation instructions. This part is suitable for single and small dual electric fans. That should do it for the review on the Flex-a-Lite temperature control module for 12 volt electric fans..


See what our Experts say about this Flex-a-lite Accessories and Parts

  • Can Flex a Lite Fan FLX236 Install on Vehicle that Had Manual Fan
    Yes you can install the Flex a Lite fan # FLX236 on a 1989 Toyota Pickup but you'll also need a wiring kit/thermostat part # FLX31149 and you'd be set.
    view full answer...
  • Recommended Thermostat Control Switch For Flex-a-lite 16" Flex-Wave Electric Fan
    The recommended thermostat switch for the Flex-a-lite 16" Flex-Wave Electric Fan part # FLX236 in the 1999 Ford F-250 4x4 is Flex-a-lite Adjustable Temperature Controller for Electric Fan part # FLX31149 which will actually read the engine coolant temperature to activate the fan when needed. It will also turn the fan on when you have the AC running in the truck. I have attached the wiring diagram for the thermostatic controller for your reference.
    view full answer...
    Image 1 for
  • Is There a Custom Installation Kit Available For the Flex-a-lite 16 Flex-Wave Electric Fan
    There is not a vehicle specific installation kit available for the Flex-a-lite Flex-Wave Electric Fan # FLX236 but it does install by mounting directly to your radiator core using nylon bolts and push nuts. This will be a great solution for your 2003 GMC Yukon XL when towing your camper and will work to keep you from overheating, especially if you tow a lot in areas with restricted air flow or at low speeds. If you want to have your fan turn off when the air conditioner is going you'll...
    view full answer...
  • Electric Fan with Thermostat for 2008 Chevy Express 3500 with 6.0 Liter
    For your 2008 Chevy Express 3500 van with a 6.0 liter engine the Flex-a-lite 16" Trimline Reversible Electric Radiator Fan # FLX116 that you referenced is a confirmed fit and would work great. It can move 2,215 CFM which will be plenty to keep your coolant cool and then for a thermostat kit you'd just want the part # FLX31149.
    view full answer...
  • Universal Electric Fan For Radiator
    It looks like you were interested in the Flex-a-lite 16" Flex-Wave Electric Fan - Reversible - 2,660 CFM # FLX236. This is a universal electric fan for radiators. It can attach to your Sierra's radiator using the included hardware. The fan can be mounted behind the radiator to be used a puller, or it can be mounted in front of the radiator to be used a pusher. Overall dimensions are 16" wide, 16-1/2" tall, and 3-3/4" deep. This is not completely necessary, but you could also use Flex-a-lite...
    view full answer...
  • Recommendation for 16 Inch Reversible Electric Radiator Fan with Thermostat
    For a 16 inch electric fan that comes with a thermostat you can use # D16316. It can also be mounted as a pusher or puller. If you want to go with the Flex-a-lite fan you can add the Flex-a-lite Adjustable Temperature Controller for Electric Fan Item # FLX31149. I have linked a video review of this part for you.
    view full answer...

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • Highest quality accessories and parts for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee Jacob W
Written by:
Jacob W

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.