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Dual Electric Fan Relay Kit Radiator Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit

  • Based on 452 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Nov 17
Order within 3 hours and 12 minutes
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Features

  • All wires are clearly labeled and color-coded. And an easy-to-follow wiring diagram is included in the package. RED to 12VDC Positive Battery Terminal, COFFEE to Fan Positive, BLACK to Sending Unit, GREY to Ignition per wiring diagram. Direct replacement part fits 10, 12, 14, and 16 inch cooling fans
  • Temperature switch turns on fan approximately at 185 Degrees and Off at 175 Degrees. The temp sensor has a 3/8 inch pipe thread, and a 1/2 inch adapter included. Please note: you need to run a 160 degrees thermostat when running this kit with this temp switch. If you got a thermostat above 160 degrees (say 180 thermostat) , your engine will not get cool enough for the fans to shut off
  • This electric cooling fan kit comes with everything you need, includes 40A relay, wiring harness, temperature switch, 3/8 inch to 1/2 inch adapter, inline waterproof fuse holder, fuses, 1 spade connector for the temp sensor, 8 ring terminals, and 4 wire connectors
  • The temperature switch supplied with this kit is OE style to mount in the cylinder head of the engine or any water jacket if needed. The temperature switch MUST be grounded through the threads to the engine in order for it to work, and the engine MUST be grounded
  • This relay kit is enough to run two medium profile or low profile cooling fans. For high profile fans, you can use ZOZOMOTORS heavy duty relay kit P/N 30247. Or crimp/solder bigger wires yourself for pin 30 & 87 to carry enough load for the fan (10 gauge wire - 30 Amps)

Connector Type: Crimp


Contact Material: Silver, Copper, Or Alloy


Contact Type: Normally Open


Current Rating: 40 Amps


Mounting Type: Panel Mount


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 9.84 x 7.87 x 1.57 inches; 8.11 ounces


Date First Available ‏ : ‎ July 8, 2021


Manufacturer ‏ : ‎ MAXCOOLING


Best Sellers Rank: #28,081 in Automotive (See Top 100 in Automotive) #3 in Automotive Replacement Engine Radiator Cooling Fan Motor Relays


#3 in Automotive Replacement Engine Radiator Cooling Fan Motor Relays:


Customer Reviews: 4.5 4.5 out of 5 stars 452 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

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


  • So far so good
Haven't installed it yet but everything seems to be of good quality
Reviewed in the United States on April 29, 2025 by Dalton W.

  • Great quality
Easy install and great quality.
Reviewed in the United States on April 21, 2025 by James Robert Brock

  • Don't skimp well worth it
Work great when I wired up my brushless electric fans for the hotrod.
Reviewed in the United States on August 18, 2025 by Arthur

  • good product
connectors are junk but other than that it worked great
Reviewed in the United States on March 25, 2025 by This is not for a crx... the stick is to small for the rear and to big for the engine compartment.

  • working
These relays are working so far. I'm not using the temperature control but using a toggle switch to control the fans.
Reviewed in the United States on January 11, 2025 by Shawn

  • items nice
nice
Reviewed in the United States on March 10, 2025 by Joseph Lee Pena

  • awesomeryness
This is a quality kit. I recently purchased this due to the fact that the last one I bought was junk. I had to keep fiddling with it all the time to make sure the fans came on. Not with this kit. It is well made, had two relays and a quality made wiring harness. Now I actually forget to keep an eye on my temperature gauge because this one is so dependable I forget to watch to make sure the fans are keeping my engine cool. They work great and I am going to buy more as I convert some of my other rigs over to electric fans. Awesome product. ... show more
Reviewed in the United States on October 20, 2022 by Bradder

  • Wiring diagram isn't correct
Got this all installed and it didn't work. Instructions do not talk about pin numbers on the relay, and according to every video out there the wiring should be Pin 30 = 12V battery (same as diagram), Pin 85 = Ground (diagram shows Fan Power), Pin 86 =12V Ignition (diagram shows Ground), Pin 87 = Fan Power (diagram shows = 12V Ignition). Now after finally tearing things apart and 2 hours research, I'll see if the correct routing works. ... show more
Reviewed in the United States on June 14, 2024 by Troy Silvester

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