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

4.4/5
Product ID: 87900688
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Details

  • Brand
    Flex-a-lite
  • Material
    Metal Plastic
  • Item weight
    1 Pounds
  • Style
    Modern
  • Lower temperature rating
    160 Degrees
Built-in 45A relay, no external relay needed
⏱️Fans run 25s post-shutdown
🌡️Adjustable temp range 160-240°F

Description

🌬️ Keep your engine cool, your ride smarter — don’t get left in the heat!

  • SMART THERMAL CONTROL - Starts fans at 60% power, ramps to 100% as engine heats up for efficient cooling
  • INTEGRATED RELAY POWER - Built-in relay eliminates bulky external components, streamlining your setup
  • PLUG PLAY RELIABILITY - Complete kit with fuse, wiring, and terminals backed by a 1-year warranty for peace of mind
  • POST DRIVE HEAT MANAGEMENT - Continues fan operation for 25 seconds after shutdown to protect your radiator
  • PRECISION TEMPERATURE SENSING - Includes thread-in sensor with multiple adapters for perfect fit and accurate readings

The Flex-A-Lite 31163 Variable Speed Controller is a high-performance automotive fan controller designed for dual-fan systems. Featuring an adjustable activation temperature between 160-240°F, a built-in 45-amp relay, and a thread-in temperature sensor with versatile adapters, it optimizes cooling by starting fans at 60% power and scaling up as needed. It also runs fans for 25 seconds after engine shutdown to prevent overheating. This all-in-one kit includes wiring, fuse, and terminals, ensuring easy installation and reliable operation backed by a 1-year warranty.

Specifications

ManufacturerFlex-A-Lite
BrandFlex-a-lite
Model31163
Item model number31163
ExteriorMachined
Manufacturer part number31163
OEM Part NumberN
Special FeaturesManual
Item Weight454 g

Have a Question? See What Others Asked

I need a replacement temp sensor anyone have a part number?
How many fans is this rated to run at 12 volts each? I have 2 90 watt 12v fans and they don't seem to run at full speed with this switch.
Does this fit cherokee xj 2000?
is this compatable with a flex-a-lite 180?

Reviews

4.4

All from verified purchases

A**R

Works very well

Installation was straight forward and is easy to setup. The electric fans on my mustang now start much less quieter and so far have only needed the low speed to keep the car cool, will see what happens in the summer.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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$1934889

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Flex A Lite Variable Speed Controller And Relay Kit Thread | Desertcart Colombia