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Your cart is empty.Derale Performance is a division of CP Auto Products, Inc., a third generation family-owned business that has been a California corporation since 1946 and a charter member of the original Speed Equipment Manufacture Association, also known simply as SEMA, established in 1963 The basic principles that our founder Sam Longo established and practiced throughout his notable career are the principles that drive Derale Performance today. Our passion to build the highest quality products is evident throughout our website - where you will find the most complete performance cooling line in the industry. We manufacture many products in-house; and source as many raw materials and components through US-based companies as possible. "Made in USA" is our promise to support quality and help return America to the forefront of manufacturing technology
Mike Wakat
2025-08-18 10:46:25
They work….
Customer
2025-07-23 13:10:40
Simple install.... Wired inline on ground lead and works perfectly.People having problems melting them down or burning out have them wired on the power lead.
Mike Toenies II
2025-07-11 15:08:11
Too long by about 1/2" for most radiators but truly does the job. My probe seems to operate 15-20 degrees hotter than stated degrees...not sure if it's incorrect. Despite it being a probe, it still should work within a few degrees . However, it works!
Niko Lovell
2025-06-22 13:57:51
Only worked once I trimmed the extra length off the end. Once I did that, it'll turn the fan on at around 200° and turns it off at 180°. I currently have my fan wired to a manual switch...
pinkboog
2025-06-18 18:22:56
Works great. Wire it up in the ground wire for the fan relay and it will last a lot longer than if you try to put full positive amps thru it.barely fit in the radiator core of my 2003 Ram.
Bishop
2025-05-12 11:12:27
Already have the relays to switch the fans on, just need a thermo switch to trigger them, attaches well and works as intended.
Weston
2025-02-24 16:50:29
Not impressed, especially for the price. I tried using 2 of these, one for each fan. These switches activated relays that ran the fans. The first two both failed to switch even at temperatures up to 225 °F (measured with an infrared thermometer). After an exchange with Amazon, one of the new switches comes on at 220 °F and the other still does not come on at all. After reading other reviews, I expected them to come on late, but I do not trust these at all.
Customer
2025-01-22 15:36:07
Works great. Turns fan on exactly at 180
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