Radiator Fans




12 Inch Diameter


Electric Fans


2150 CFM


High-Output Fan

Derale 12" High-Output, Electric Radiator Fan - 2,150 CFM

Derale 12" High-Output, Electric Radiator Fan - 2,150 CFM

Item # D16925

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Shipping Weight: 7 lbs

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12-1/4" Wide x 12-5/8" tall x 3-1/8" deep, high-output, ultra-quiet, electric fan assembly will boost your vehicle's fuel economy and increase both torque and horsepower. Lowest Prices for the best radiator fans from Derale. Derale 12" High-Output, Electric Radiator Fan - 2,150 CFM part number D16925 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (4)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Derale Radiator Fans - D16925

  • 12 Inch Diameter
  • Electric Fans
  • 2150 CFM
  • Derale
  • High-Output Fan

12-1/4" Wide x 12-5/8" tall x 3-1/8" deep, high-output, ultra-quiet, electric fan assembly will boost your vehicle's fuel economy and increase both torque and horsepower.


  • Increases fuel economy, horsepower and torque
  • Improves overall performance
  • Has patented, ultra-quiet, skewed-blade design
  • Offers consistent airflow with stator flow directors
  • Designed with durable, injection-molded housing
  • Able to be mounted in various locations
    • Pusher applications only, unless being used with custom shroud
  • Can serve as replacement fan for certain shrouded Derale RAD fan models:
    • Derale 16" High-Output Radiator Fan-and-Shroud Assembly - 2,200 CFM (D16926)
    • Derale 26" Dual High-Output Radiator Fan-and-Shroud Assembly - 4,000 CFM (D16927)
    • Derale 29" High-Output Radiator Fan-and-Shroud Assembly - 4,000 CFM (D16928)
    • Derale 32" High-Output Radiator Fan-and-Shroud Assembly - 4,000 CFM (D16934)
  • Includes all necessary mounting hardware and high-amperage relay wiring harness
  • Made in USA


  • Overall dimensions: 12-1/4" wide x 12-5/8" tall x 3-1/8" deep
  • Fan diameter: 12"
  • Mounting dimensions: 10-5/8" wide x 7-7/8" tall x 1-1/2" deep
  • Maximum cubic feet per minute: 2,150
  • Power draw: 23.4 amps per fan
  • High-output motor: 265 watts
  • 1-Year warranty

Whereas belt-driven fans use up power from the engine to turn, electric fans do not, thus removing any unnecessary load and increasing both fuel economy and horsepower. In addition, you do not have to worry about an electric fan's slowing down at low RPM, as many belt-driven fans do, so you are guaranteed sufficient airflow regardless of the vehicle speed.

While this assembly is intended for primary cooling and should, therefore, provide enough CFM to replace your vehicle's factory fan, you will still need to determine the CFM requirements for your engine before making your purchase. And remember, engines that have been modified or vehicles often used for towing may require additional CFM. There is no limit to the number of fans you can install, as long they all fit appropriately and are mounted on the same side of your radiator so that they do not cancel each other out.

Two types of turn-on sources are available for this fan. The Derale Lighted On/Off Switch for Electric Fans (D16740) allows for manual control of your fan so that you can choose when to turn it on and off. Thermostatic controls, on the other hand, send a signal to the fan, directing it to shut off when fluid temperatures reach an appropriate level, thus saving power. Once the temperature climbs again and additional cooling is needed, the fan is automatically turned back on. Thermostat switches can be single-stage with pre-set temperatures - D16735, D16738, D16739, D16720 and D16721 - or adjustable - D16778 and D16779.


16925 Derale High-Output Single RAD Fan with Housing

D16925 Installation InstructionsInstallation Details D16925 Installation instructions

Video of Derale 12" High-Output, Electric Radiator Fan - 2,150 CFM

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Derale Radiator Fans - Electric Fans - D16925 Review

Today we're going to take a look at the Derale 12" High-Output Single inaudible 00:00:04 Electric Fan with the standard mount kit. Now this fan will increase fuel economy, horsepower and torque, improves overall performance. Has the patented ultra-quiet skewed-blade design you can see with the 11 blades. This is designed with a durable injection molded housing with the stater flow directors. Now this is able to be mounted in various locations. It is a pusher application fan only so unless it's being used with a custom shroud. This can serve as a replacement fan for the A13 and M13 Derale Shrouded Fan models.

Now this part includes everything shown here on the table, includes all the necessary mounting hardware, includes the fan assembly the mounting hardware for the fan, includes a nice fused high amperage relay wiring harness with the 25 am relay, rubber isolators for when you're mounting it and a nice set of detailed installation instructions. Now the specs on this, the maxim cubit feet per minute the fan moves is 2,000. The power draw it uses is 23.4 amps. We're going to give you measurements, we'll give you some overall dimensions. Overall width from edge to edge right at 12 5/8 inches. The height would be the same, right as 12 5/8 inches.

Now the depth of it, from the front to the very back of the motor, you're going to be looking at 3 1/8 inches deep. Then the fan itself overall diameter of the fan is right at 12 inches and the fan by itself is 1 1/2 inches deep. That should do it for the review on the Derale 12" High-Output Single inaudible 00:01:38 Electric Fan with the standard mount kit.

Customer Reviews

Derale 12" High-Output, Electric Radiator Fan - 2,150 CFM - D16925

Average Customer Rating:  4.5 out of 5 stars   (4 Customer Reviews)

12-1/4" Wide x 12-5/8" tall x 3-1/8" deep, high-output, ultra-quiet, electric fan assembly will boost your vehicle's fuel economy and increase both torque and horsepower.

- D16925

These fans are made in America that means a lot to me.service was great thanks to Cathy. 682850

- D16925

I put two of these in front of the radiator in my suburban. They were great at keeping the engine much cooler especially while I am towing or sitting in traffic. They were easy to install and connect. I connected them together with 3 relays to switch them between either series or parallel connection, depending on what power output I wanted. In series, they would run at half speed whenever the air conditioning compressor was running, which worked great for keeping airflow over the air conditioning condenser and the engine cool while idling in the hot sun. I added a radiator temperature probe to the radiator and the oil, so when either got to 180° it would switch to parallel mode and run the fans at high-speed. The reason for not running I'm in high-speed all the time was for two reasons, first because they are two fans are a little loud if the vehicle is not moving, second the power draw of the two fans was a little too much for an idling engine, especially with a trailer plugged in drawing power also. 428637

- D16925

This is the second set of fans that I have had. Now I have DERALE FANS for both of my trucks. I love them! 93290

- D16925

The fans seam to be exactly what I needed .the mounting ties did't work very well. The keeper didn't hold very well 71006


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Info for this part was:

Updated by:
DeAnne T
Updated by:
Sarah W
Updated by:
Daron K
Installed by:
Jeff D
Expert Research:
Jameson C

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