/
Derale/
8 Inch Diameter/
Electric Fans/
350 CFM/
Dyno-Cool FanItem # D16908
Retail:$70.51
Our Price: $35.93
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7-7/8" Wide x 8-1/4" tall x 2-1/4" deep, low-profile, straight-blade fan improves gas mileage and boosts overall performance by maintaining proper airflow to your vehicle's radiator.
Features:
Specs:
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.
Before purchasing an electric fan, be sure to determine the CFM (cubic feet per minute) requirements for your engine. 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.
Installation Details 
Video of Derale 8" Dyno-Cool Straight-Blade Electric Fan - 350 CFM
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to take a look at the Derale 8" Dyno-Cool Straight Blade Electric Fan. This fan will increase your fuel economy, horsepower, and torque, improves overall performance, can be mounted on either side of the radiator as either a pusher or a puller with no loss of airflow. If you do use it in a puller application, you do want to wire this to what the colors say on the label right here. The positive lead, which is the blue wire, is for your power, and the ground which is your black wire. If you do use it in a pusher application, you want to reverse the connections to change the airflow directions. This has a very ultra-low-profile design for tight applications. This does come with everything shown here: the mounting kit and a nice set of detailed instructions on how to install it. The maximum cubic feet per minute on this fan would be 350.
The power amp draw is only 5.3 amps. I do want to give you a few dimensions. The overall width, edge to edge, is going to be right at 7 7/8 inch. The overall height, from the bottom to the top, is 8 1/4 inches. The depth, from the front to the very back, is going to be right at 2 1/4 inches deep. The fan itself we mentioned is an 8-inch fan, and the depth on the fan is 1 1/4 inches deep. That should do it for the review of on the Derale Dyno-Cool Straight Blade Electric Fan..
Average Customer Rating: 4.6 out of 5 stars (85 Customer Reviews)
7-7/8" Wide x 8-1/4" tall x 2-1/4" deep, low-profile, straight-blade fan improves gas mileage and boosts overall performance by maintaining proper airflow to your vehicle's radiator.Great staff great products grade A service from customer service will definitely order from etrailer again 26560
Hi I need to know at what temp. is exactly activated Thanks
-- comment by: LIVIU - 08/09/2013This fan does not include a thermostat system. It can be wired into the original electrical system and will then operate according to the thermostat system in the vehicle. It can also be wired to an on/off switch but that is usually only done if off-road and race applications. We have plenty of thermostat options, sold separately, for determining the temperature at which the fan kicks on. For example, part D16735 kicks on at 180 degrees and shuts off at 165 degrees. Part D16759 is an adjustable thermostat system. Turn-on temperate can be set any where between 150 and 240 degrees. The turn-off temperature will always be 10 degrees less than the turn-on temperature.
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Patrick B - 8/9/2013lasted over 5 years on 24/7/180 on green house just ordered new one. 282988
This fan is for a project that will not be completed until the middle of 2014 or later. I plan to use it to increase the air flow through the air conditioner condenser in my 1969 Corvair convertible. I will be ordering another fan since my design requires two fans for greatest efficiency and the flow rate for these fans is on the low side. The 500 cfm fans comes with too many items that are useless for my application thereby being too expensive. Dale Bartley 77284
Review from a similar Derale Dyno-Cool in Radiator Fans
Easy install, works great. Installed on a 2001 Jeep Grand Cherokee. I tow a 19' boat and haven't had any transmission issues since. 293582
Review from a similar Derale Dyno-Cool in Radiator Fans
This is an excellent price and appears to have more cooling capacity over the OEM cooler. Installed very easily. This was used on an 08 HONDA PILOT 135385
Review from a similar Derale Dyno-Cool in Radiator Fans
I installed this cooler on a 2001 odyessey to help prevent a future trans failure.It was delivered quickly when promised,came with everything I needed for installation and had no problems.Overall a good product I would recommend this to anyone. I am also very happy with etrailer.coms service and selection and would definitly use them again. 14807
Review from a similar Derale Dyno-Cool in Radiator Fans
This product is great and installation was not bad at all. Only issue I had was that the GM radiator adaptor should come with this unit when you purchase it for a GM truck. Not as an add-on. Thought I could get it at GM but no go. I Had to work with hoses over 30 min to get them over the fittings even with trans. fluid on the hose and male fitting. So far it looks like trans temp has dropped 30 dg. 134485
Review from a similar Derale Dyno-Cool in Radiator Fans
Super easy install. With the installation video on Youtube it took out any of the guess work. The hose could stand to be about 3" - 5" longer if you are going to center in the A frame of an older chevy grill (I have an 06 Avalanche. I had to offset to the passenger side to use the supplied hoses) But, you can get a longer hose easy enough. Just ran over the pass and back and no leaks. Looks good so far! 377410
Review from a similar Derale Dyno-Cool in Radiator Fans
This is a customer service review not a product review. Leeza J. was very helpful in helping me get everything needed for adding a secondary transmission cooler to my Chevy truck. I ordered 3 different items and the one item was not in stock and I was promised that I would be notified when it arrived. I was notified that the item was in stock 2 days later and I received the package a few days after that. Very good service that impressed me. 377288
Review from a similar Derale Dyno-Cool in Radiator Fans
This is a great after market to substitute for the original. 19879
Review from a similar Derale Dyno-Cool in Radiator Fans
Works great thanks mine got a hole in it and i replaced it with this one. 130315
Best thing iv ever invested in an at a great price
Ron - 05/13/2015Review from a similar Derale Dyno-Cool in Radiator Fans
I purchased this for my C6 Corvette A6 transmission. I did, however, bypass the radiator and only use the transmission cooler for the C6. I purchased and used the Derale Radiator Adapter fitting 259-13035 for both the top and bottom and just capped them off to keep debris out of the reservoir. I also had to make some custom mounting brackets. This is an excellent product and it keeps the tranny in a great temperature range. 552474
Review from a similar Derale Dyno-Cool in Radiator Fans
Very easy install, absolutely no leaks anywhere in the system after putting it into service. I did have to get additional hose for the install due to the location I chose for the cooler (personal preference). I centered it on the bumper side of the radiator to provide the best air flow. Remember to get a quart of transmission fluid to accomodate the larger system volume after the install. I took my grill off to provide the most room for putting the cooler in rather than trying to wedge it between the radiator and grill, made install the nylon fasteners through the radiator and cooler much easier. Should last for many years. 61081
Review from a similar Derale Dyno-Cool in Radiator Fans
Ive got a 1999 4runner that had the unfortunate luck of having the integrated transmission cooler line rupture inside my radiator. needless to say, the transmission didnt agree very well with having engine coolant running through it and finally died out on me. I bought this transmission cooler to isolate the transmission and the engine cooling systems. The cooler arrived a day ahead of schedule, which is always a bonus. I didnt rate it at 5 stars because I havent had a chance to install it yet and see how it performs, but judging by the reviews that I have read so far, the customer service provided and the prompt delivery, I would say that this transmission cooler will keep my truck running for a good long while. Everything pictured arrived in the box and I have no doubt that it will perform as expected. I will definitely recommend this product and this company to my friends! 30988
Review from a similar Derale Dyno-Cool in Radiator Fans
I mounted this fan in the puller position on my auxiliary transmission cooler so that I can tow a 15ft travel trailer with my minivan. Installation was sweet. There was an instruction page in the box and enough parts for mounting. I was surprised at how much air this thing moves. I wouldn't call it noisy since the fan spins smoothly and quietly when I tested it out in the open, but when mounted in the congested grill area of my 2012 Dodge Grand Caravan I can definitely hear it hum more than the stock radiator fan. It pushes that much air. I would definitely recommend this product. 413989
Review from a similar Derale Dyno-Cool in Radiator Fans
great product easy to install - put it in my 66 mustang as a power assist steering cooler 157550
Review from a similar Derale Dyno-Cool in Radiator Fans
Just got it in the mail the other day. Fast shipping, never have had an issue. Having it installed right now. Feels like it is well constructed and should do the job. We shall see what happens. 18179
What is the rated towing weight for a 1999 Honda CR-V? Does a trannie cooler install fairly easily on the Honda CR-Vs? What is the most effective mounting location for the finned cooler? How does the addition of a trannie cooler effect the volume of fluid and fluid level reading on the dip stick? Thanks for your time and expertise.
-- comment by: Robb B - 10/22/2013The towing capacity question is a loaded one. For that, I would refer back to the owners manual. It can vary depending on engine, transmission, drive configuration and more. Furthermore, Honda has some very specific guidelines regarding towing so it's best to defer to them. Installing a trans cooler on a full size truck can be easier because of the extra space, but it is not particularly difficult on any vehicle. We actually have a video of a cooler being installed on a 2006 C-V. We remove the front bumper cover for the video, but you may find you do not need to. (See link). The most effective location will be in front of both the radiator and the A/C condenser. As you move behind each cooling device, the efficiency diminishes. We put ours in front of everything on the 2006 in the video. For fluid capacity, plan on an extra 1/2 quart. Depending on cooler size and construction, it will vary some, but 1/2 qt. is a good rule of thumb.
-- Patrick B - 10/23/2013Review from a similar Derale Dyno-Cool in Radiator Fans
I ordered this cooler for my daughter's 2012 Nissan Rogue to fix CVT transmission heating up causing it to into limp mode. When I got ready to install, I found there was no place to connect the hoses to the transmission. The vehicle only had the direct "bee hive" cooler. Install was delayed while waiting to get a "4 tube bee hive" from a different supplier for an additional $114. 551625
Review from a similar Derale Dyno-Cool in Radiator Fans
good product form a great company ! my only complaint is this was listed as for my specific truck, but the "insta-dapt" supplied doesn't fit the Dodge truck of my year. even doing my research ahead of time, it seems to be hit or miss whether it would fit as some of them come with 5/16 fittings and some (like mine) come with 9/16 fittings. it doesnt matter the engine size, even other 3.7L dodge trucks of the same year have 5/16 fittings... I think Dodge made a change middle year, but never let the consumer know as mine is a late year '04. no dig deal as I was able to assemble it anyways and got it up and running great and both the radiator and trans are running much cooler now ! I attached the D12902 to the bumper as you will see in attached images. 2 attached images are just before finishing, bumper hasnt been attached yet, one of them is after everything was complete. 189096
Review from a similar Derale Dyno-Cool in Radiator Fans
After one of use on a 2005 Honda Pilot, everything is holding up just fine. The one star less is because of the difficulty in installing it on this particular vehicle. Although this is a universal component, it is MUCH easier to install on pickup trucks. Best of luck with a brand new rubber hose going on with any sort of ease. 521316
Our installers typically use some transmission fluid to make installing the rubber hose on the Insta-dapt fitting easier.
-- Rachael H - 06/13/2018Review from a similar Derale Dyno-Cool in Radiator Fans
I bought this cooler for my 2007 Chevy avalanche LTZ 4X4 with 5.3 motor. I also bought the adapter the adapter D13035 for my truck as well. It was a quick and easy install. I just got it installed on 2/2/2018 and took the truck for a drive and it has dropped my transmission temp at least 40 degrees. It took me around 40 min to install. Very Happy with this new addition to my truck. FYI if you buy this unit to make it easier i would order an extra Line because the one line will be cutting close to reaching location. 472461
Review from a similar Derale Dyno-Cool in Radiator Fans
The product was just what I needed. The description was accurate, the price was great and the shipping was fast. Thanks Donnie 164228
Great, no problems
Donald C - 12/12/2015Review from a similar Derale Dyno-Cool in Radiator Fans
Installed this in a 2017 Honda Ridgeline. Mounted it above the factory cooler that was already in the truck. (Flat fin side towards the a/c condenser). I used the insta-mount zip tie kit and also the flex metal mounts to anchor the cooler to the top of the factory cooler bracket as close to the a/c condenser as possible. The vertical bracket (part of the truck) that runs right down the middle of the a/c condenser has to be cut. All fairly minor fabrication. Hack saw and hand drill stuff. The fan has to be reversed to become a pusher. Followed the hood release cable from the interior to run 12 volts to power the fan on at ignition. Haven’t hooked the trailer up yet so I don’t know if this will resolve the hot tranny situation. ( I could smell the tranny getting hot before especially when we stopped at lights). Change your fluid too. etrailer delivered quickly and the cooler was well boxed and untouched. 656607
Review from a similar Derale Dyno-Cool in Radiator Fans
Fast shipping and the best customer service. Looking forward to getting the coolers attached and will add some pictures. 628785
Review from a similar Derale Dyno-Cool in Radiator Fans
Fast Shipping Customer Service is Great. They sent me a list of everything I needed. 615223
Review from a similar Derale Dyno-Cool in Radiator Fans
good show cost effective wood by again 599189
Review from a similar Derale Dyno-Cool in Radiator Fans
I just installed this on my chevy avalanche. Flipped the bottom brace around in order to mount to. The hardest part is getting the hoses on the cooler and over the return line. I ended up getting a 90 deg quick connection coming from the radiator instead of using the one I got from etrailer. This keeps the hose from bending as much. Also purchase the installation kit with a hose as you will need an extra hose. After install I wish I would have went with the next bigger unit which is 10 high instead of 7 1/2 as I had plenty of room. 591245
Review from a similar Derale Dyno-Cool in Radiator Fans
Great for the money free shipping anytime you are pulling a heavy load you should always have this 584833
Review from a similar Derale Dyno-Cool in Radiator Fans
exactly what i needed 551617
Review from a similar Derale Dyno-Cool in Radiator Fans
this product was exactly as described very good 550839
Review from a similar Derale Dyno-Cool in Radiator Fans
works well, wouldn't buy one any smaller than this one. 529302
Review from a similar Derale Dyno-Cool in Radiator Fans
Great value, pretty dang good fits well,good product for the $$, much better than those ones everyone else has. I have found the appearance to be pleasing I would recommend 524382
Review from a similar Derale Dyno-Cool in Radiator Fans
Worked great 511167
Review from a similar Derale Dyno-Cool in Radiator Fans
Simple to install 488126
Review from a similar Derale Dyno-Cool in Radiator Fans
I was able to install this and the PS cooler in one afternoon. I am not a mechanic, but I am fairly handy. Your milleage may vary. All the parts were correct and fit my 2007 Honda pilot fine. 425956
Review from a similar Derale Dyno-Cool in Radiator Fans
easy installation & works great, good v alue. 408825
Review from a similar Derale Dyno-Cool in Radiator Fans
Great cooler for the money. Very simple to install 395370
Review from a similar Derale Dyno-Cool in Radiator Fans
good product at a very good internet price, thanks 374143
Review from a similar Derale Dyno-Cool in Radiator Fans
i put this unit in my 2008 NIssan Titan pickup. we are going to take a 9000 mile trip this summer pulling a 27 ft HI Lo camper. The instructions were very generic. specific unit instructions would be very helpful. the grill was difficult to get out until i found a Youtube video for that. the hose provided was to short, so I made a run to the parts store. the unit appears to be well made. 368894
we used the cooler in my 08 Titan. we pulled a 27 ft travel trailer thru 28 states and never had any issues
Jim K - 04/19/2018Review from a similar Derale Dyno-Cool in Radiator Fans
Everthing as described. From ordering to the home delivery, I was informed every step of the way Good old fashion Americian business! The way it should be done. You guys set the bar high when doing buisness! Thanks a million! 366272
Review from a similar Derale Dyno-Cool in Radiator Fans
Very good product works well. The reason for 3 stars, it's NOT a direct fit as described when I purchased the product. The transmission lines are fitted to the A/C condenser so they had to be cut and needed to buy a flaring tool to flare the cut transmission lines. I look at the product online and now there's a note stating altering OEM lines may be needed. This wasn't there when I purchased it which delayed my install for another day. 336579
Review from a similar Derale Dyno-Cool in Radiator Fans
The trans cooler was easy to install. I had to go and buy some more hose and mounting screws to make it work but I knew that before I started. The hose was because of where I wanted it mounted. The trans cooler is keeping the transmission about 30 to 40 deg cooler then before. 283694
Review from a similar Derale Dyno-Cool in Radiator Fans
Excellent product. Fast shipping! 277139
Review from a similar Derale Dyno-Cool in Radiator Fans
As always, fast delivery, complete products that fit right at the best price anywhere. Everything I needed to turn Mom's Forester into a tow beast (for a pop up camper anyways)! 267956
Review from a similar Derale Dyno-Cool in Radiator Fans
Exactly what I ordered. Quick shipping and all parts needed for installation included! Always easy to find what I need at E-Trailer! 251802
Review from a similar Derale Dyno-Cool in Radiator Fans
We're an independent auto and truck repair parts were delivered promptly. Seem to be good quality and fit great on our customers unit thanks.. 241851
Review from a similar Derale Dyno-Cool in Radiator Fans
Nice product not easiest to install hoses but overall nice piece. 229141
Review from a similar Derale Dyno-Cool in Radiator Fans
Nice inexpensive transmission cooler. Simple installation, although I didn't use the through radiator plastic ties supplied. Drops transmission temperatures well. 225628
Review from a similar Derale Dyno-Cool in Radiator Fans
WOW, My order came fast, I'll be shopping with them again! 212935
Review from a similar Derale Dyno-Cool in Radiator Fans
The tranny cooler was really simple to install. Everything you need is in the kit.It took about 45 minutes. Great product. Delivery was quick. Thanks to all, no picture at this time, trucks on the road. 200849
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