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Your cart is empty.Thermostatic switch for use with fan relay kits. Switch specifications: 185 Degrees On/175 Degrees Off. Switch thread size 3/8"-18NPT, 1/2" to 3/8" NPT adapter also provided. Includes wiring terminals.
O'Neil Williams For Judge
2025-09-01 17:58:19
Good fitWesterbeke 8kwSea Ray 390
JenniferNY
2025-07-31 14:48:45
I have a 1998 Jeep Grand Cherokee 5.9 Limited. It came from the factory with an electric fan controlled by two temperature switches, one in each radiator hose to turn the fan on for the low and high speeds. Unfortunately, Jeep has discontinued every part of this system, including the switches and they are not available in the aftermarket sector. It involves a little rewiring because the connector is different, but other than that they are a direct replacement.In 2015 I tried Derale switches in each hose, but they would turn on the fan for either the low or high speed.In 2016 I came across the Painless 30111 switches and installed them in each radiator hose. It has been a year and the system has worked flawlessly. My temperature gauge sits right where it did since new when the original switches were working, even on 90 degree days with the A/C on!!!If you have a Jeep 5.9 Limited, or a Dodge Ram with the Heavy Duty Cooling Option that uses the electric fan I highly recommend that you install these!!!
Miia
2025-07-08 18:45:23
Accidentally ordered the incorrect size, but finding a 1/8 NPT fan switch is a nightmare. Decided to tap a larger hole in the coolant adapter, soldered on a pigtail, works perfect. so far is easily controlling two electric Mishimoto Fans on my ae86. The temp is off by a few degrees, but that was only using one gauge, not cross gauging to verify. Either way, the car stays nice and cool this far.
Customer
2025-07-05 16:12:45
If you really need to control your fans, these will work but I'd double check them first. Don't always turn on or off at the advertised temps. But does work just have to keep an eye on engine temp when first installed.
Ken
2025-04-21 18:21:31
Update to my review. the switch works perfect, I found another problem. I would recommend this sensor.This would not work on my motor. My fans would not switch on and tested the switch to be fine. The problem I had was the adapter hides too much of the sensor from the coolent stream. This sensor needs to be longer
Jeremy D.
2025-02-20 13:42:10
Order 2 and neither turned on as advertised..first one was 178*on and 158* off..2nd was 176*on and 164* off..far off from the 185*on and 175* off as advertised,this would cause my fans to constantly run and not turn off
JRV
2025-02-02 12:04:37
All my project cars get an electric fan upgrade from mechanical fans to minimize wear on the water pump pullies and power loss from the load a mechanical fan puts on an engine. These thermal normally open switches are an integral part of worry free instalation and reliability.
clay Huckins
2025-01-23 15:46:21
great product
Client d'
2025-01-08 13:49:19
Livraison rapide,Tres bon produit ,fait partir la fan électrique,a la bonne température ,et éteint après refroidissement,je recommande ce produit
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