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❄️ Stay Cool, Tow Smart — Because Your Ride Deserves the Best
The Derale 13900 Electra-Cool Remote Cooler is a high-performance, 12V electric transmission cooler featuring a 16-pass tube and fin design. Engineered to mount flexibly in tight spaces, it optimizes airflow to dramatically extend engine and transmission life, especially under heavy towing conditions. With remote control functionality and a compact footprint, it’s the smart upgrade for millennial pros who demand reliability and efficiency on the road.

| ASIN | B004XONS7G |
| Best Sellers Rank | #544,708 in Automotive ( See Top 100 in Automotive ) #148 in Automotive Replacement Engine Coolers |
| Brand | Derale |
| Customer Reviews | 4.4 4.4 out of 5 stars (66) |
| Date First Available | June 18, 2009 |
| Exterior | Per Item Description |
| Item Weight | 10.7 pounds |
| Item model number | 13900 |
| Manufacturer | Derale |
| Manufacturer Part Number | 13900 |
| Model | 13900 |
| OEM Part Number | 13900 |
| Position | Center |
| Product Dimensions | 14.5 x 19.25 x 6.75 inches |
| Special Features | Remote Control |
| Voltage | 12 Volts |
| Wattage | 35 watts |
T**E
Excellent product and fast delivery
Excellent product and fast delivery!
O**E
Works great - get one if you tow
Does exactly what you'd expect it to do as it keeps the temps down. I'm using as a secondary cooler, but I have plans now to eventually disconnect my primary and run directly from the lower radiator (still needed for winter heat) and go through my filter and straight back to the fluid control thermostat and then onto and into the electric cooler. Pros: Usually does not come on unless I'm towing on 90+ degree temps Cons: None My application: Ford 7.3 diesel with metric trans. I saw where this other fellow mounted back here and it makes perfect sense because if you mount it up front then you're just adding more hot air to what already has to get through your condenser and radiator. The next thing that I'm going to do is mount some stretch metal below it for additional protection against road debris.
L**S
Great product good quality
Great. Product good quality
A**8
Cools your trans fluid
Works as intended to keep transmission fluid cool. I did not use the included temp sensor to activate the fan as I use an aftermarket ecu and sensor in the pan the activate the fan.
G**N
Oil cooler
It did not do as well as I thought it should but did cool a little bit
T**R
Great cooler design, lousy thermostat quality.
Five stars for the build quality of the cooler and the fan - one star for the included thermostat. There isn't any way to seal the threads of that WEAK little screw-in thermoswitch, and it leaked immediately. I tried sealing it with threadlocker, and that didn't work either - when I tried to remove it to do something different, the brass screw promptly sheared right off. Now I need to figure out a more durable thermostat switch obviously.
C**N
Perfect
Install went very nice on my 7.3 diesel.
B**T
Great product
This cooling package works great as a stand alone transmission cooler.
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