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Flex-a-lite

Variable Speed Controller and Relay Kit with Thread-In Temperature Sensor, Fan Controller With Temperature Probe (31163), Black

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Feb 3
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Features

  • One Flex-A-Lite Variable Speed Controller with Electric Fan Relay Kit and Thread-In Temperature Sensor (31163)
  • This variable speed cooling fan controller has a built-in relay function, which means no need for external relays
  • Flex-A-Lite Variable Speed Control Module includes 1/4-inch NPT threaded temperature probe with 3/8-inch and 1/2-inch thread adapters
  • Automotive fan controller starts fans at 60 percent power and increases speed as temperature rises; and runs fans for up to 25 seconds after the vehicle is turned off to remove excess radiator heat
  • The Flex-A-Lite Variable Speed Controller is the perfect companion to automotive electric dual-fan systems

Description

The Flex-A-Lite Variable Speed Controller is an electric fan controller for automotive dual-fan systems. It features an adjustable activation temperature range of approximately 160-240°F and provides relay function that eliminates the need for external relays. The cooling fan control module starts fans at 60% power, reducing startup amperage and increasing fan speed to 100% as the engine coolant temperature increases. It also runs fans for up to 25 seconds after the vehicle is turned off to remove excess heat from the radiator. The controller comes with a thread-in temperature sensor, a max amp inline fuse, wiring and electrical terminals for most common applications using an electric radiator cooling fan or engine cooling fan. It also includes a 1/4-inch NPT threaded temperature probe with 3/8-inch and 1/2-inch thread adapters. With a 45-amp rating and compatibility with 12-volt systems, these car parts are a reliable and efficient option for controlling engine cooling fans. The auto parts fan controller comes with a one-year manufacturer warranty, providing peace of mind for car enthusiasts who demand quality and reliability.

Brand: Flex-a-lite


Item Weight: 1 Pounds


Style: Modern


Lower Temperature Rating: 1.6E+2 Degrees Fahrenheit


Maximum Supply Voltage: 12 Volts (DC)


Brand: ‎Flex-a-lite


Item Weight: ‎1 Pounds


Style: ‎Modern


Lower Temperature Rating: ‎1.6E+2 Degrees Fahrenheit


Maximum Supply Voltage: ‎12 Volts (DC)


Measuring Range: ‎160 - 240 °F


Mounting Type: ‎Threaded


Output Type: ‎electrical signal


Response Time: ‎25 seconds


Upper Temperature Rating: ‎2.4E+2 Degrees Fahrenheit


UPC: ‎088657311632


Global Trade Identification Number: ‎32


Manufacturer: ‎Flex-a-lite


Model: ‎31163


Item Weight: ‎1 pounds


Country of Origin: ‎USA


Item model number: ‎31163


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Machined


Manufacturer Part Number: ‎31163


OEM Part Number: ‎N


Special Features: ‎Manual


Date First Available: December 2, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Feb 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great product
Great value for the price. This is a quality product and works as described. I have this controlling two 12" Spal fans and works perfectly. I really like the feature that lets the fans continue to run after you shut the car off. The way the controller starts the fans at 60% and ramps up as needed is also a great feature. So much easier on the charging system. I would not hesitate to purchase again. ... show more
Reviewed in the United States on December 30, 2024 by Justin Voskuil
    • Well designed works great - The kit has everything needed to install. Tech. support awesome!
I installed an older version of this in my car over 10 years ago. It was still working fine, but I didn't want to risk overheating, so I replaced it. Since I bought my first one the controller has been redesigned and is much improved. (Not that it was crappy before ;-) The fan speed ramps up and down over about a 10 degree range which is nice. It has a "soft" start so as to be easier on the charging system. Very important to me living in the south: It has a controller lead that can be wired to your AC compressor so that the fan comes on when the AC is running. This provides MUCH improved AC performance compared to my OEM fluid fan clutch. This feature alone made it worth installing for me! Tech. Support is available. It is speedy and knowledgeable. I spoke with AJ about some details of installing this on my "vintage" 1986 vehicle, and he was incredible helpful! All the parts that you will need are included in the kit, and he fuse block included is the most robust I have ever seen! I've had trouble in the past with the crappy fuse holders from the mass-market parts stores... I expect no trouble from this one! ... show more
Reviewed in the United States on November 1, 2021 by JimBob
    • Overall pretty good
I called the tech line at Flex-a-lite before I bought it,and told them them I had a Derale two speed fan and wanted to know if it would work on it properly. Tech said it should work fine. (Note: Derale controler I bought was junk, did not work out box and tech support does not exist.) Unit installed fine, but fan chatteres when first starting. I believe this is due to 60 % starting current. The Derale fan is 13 inch in diameter, tried it on both speeds same result. Called the tech line to see if I was doing somethng wrong. Tech was very supportive, went throught installation process seems everything was right. After checking out found that all the connections were creating a lot of resistance. Cleaned the connections and checked with meter and fan only slightly chatters at start up. Controller works very well. Recommend to manufacturer to make leads from controller to battery in one long piece to elimate 2 splices. This will also make it look cleaner. ... show more
Reviewed in the United States on November 25, 2012 by Ldt51
    • Finally heat control!
I normally don't write reviews but I was so please how well this unit worked I had to share with others. I have been struggling to control the heat out here in the Southwest dessert on a modified Classic Mustang, 347 stoker, 3 core aluminum radiator, 2 wire fan. Once I was reaching operation temperatures and my temp sensor signaled to turn the fan on, my carb. would get heat soaked, the fuel would boil and that was the end of the run. This unit not only allows me to control the heat very well within a tight window, it does not let my charging system get overworked, and because of the lower fan speed it does not overload connectors. all win win scenarios. The low cost was more than worth it, Installation was easy. The only thing I didn't care for was that I had to change my connector because I don't like using butt connectors. Now we wait and see how durable it will be??? . ... show more
Reviewed in the United States on January 16, 2023 by Hmberto
    • Does it’s job
Bought this to replace an older version. Installed in a Jeep Wrangler YJ. Easy install, well built, does its job.
Reviewed in the United States on May 4, 2024 by Joshua Grosser
    • FAILED LESS THAN A MONTH AFTER WARRANTY
I'm a master certified mobile electronics technician, over 35 years in the custom automotive field, restoration, custom fabrication, and electrical. I've always loved Flex-a-lite products until now. Module was installed on a well maintained 2001 Ford Ranger that still looks like the day we bought it. Decided to relieve the added stress from the factory fan and add my go to Flex-a-lite products. Installation was always straightforward, clean, and installed to look factory. However, the longevity of this unit doesn't leave me comfortable to put anyone behind the wheel with a Flex-a-Lite product. Keeping things cool is not what it's cracked up to be. Where did this go wrong? I can guarantee the installation 100%.... that's my job and my responsibility to provide not only myself but my customers what was supposed to be a quality product. One failure leaves the door wide open for multiple failures. I'm requesting to my customers whom I've installed any Flex-a-lite products to whether they purchased the modules themselves or not to bring them in and swap them for another product. All it takes is one failure, excessive overheating, and a family member stranded in this Texas heat to realize that the quality has gone down hill. Thank you Flex-a-lite for the quality in what used to be years ago, but not where it 's heading today. ... show more
Reviewed in the United States on July 18, 2024 by CP DESIGNS
    • works and works as it should
it cuts the startup amps by half, this is great fore the charging system
Reviewed in the United States on November 25, 2024 by charles
    • Very nice kit, easy to install and worked perfect from ...
Put on my 66 f100 4x4 that was plagued with low speed over heating issues. Very nice kit, easy to install and worked perfect from the get go.
Reviewed in the United States on August 16, 2014 by kevin duby

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