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Derale 8" Dyno-Cool Straight-Blade Electric Fan - 350 CFM

Derale 8" Dyno-Cool Straight-Blade Electric Fan - 350 CFM

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Derale Straight Blade Radiator Fans - D16908
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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. Lowest Prices for the best radiator fans from Derale. Derale 8" Dyno-Cool Straight-Blade Electric Fan - 350 CFM part number D16908 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (103)
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  • Why etrailer?

Derale Radiator Fans

  • 350 CFM
  • 8 Inch Diameter
  • Electric Fans
  • Dyno-Cool Fan
  • Derale
  • Straight Blade

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:

  • Increases fuel economy, horsepower and torque
  • Improves overall performance
  • Can be mounted on either side of the radiator, as a pusher or puller, with no loss of airflow
  • Has ultra-low-profile design for tight applications
  • Includes mounting kit


Specs:

  • Overall dimensions: 7-7/8" wide x 8-1/4" tall x 2-1/4" deep
  • Fan dimensions: 8" diameter x 1-1/4" deep
  • Distance between mounting holes: 4-3/8"
  • Maximum cubic feet per minute: 350
  • Power draw: 5.3 amps
  • 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.

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.

Dimensions

16908 Derale Dyno-Cool Straight-Blade Electric Fan Kit

Item # D16908

Installation Details D16908 Installation instructions




Customer Reviews

Derale 8" Dyno-Cool Straight-Blade Electric Fan - 350 CFM - D16908

Average Customer Rating:  4.6 out of 5 stars   (103 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.

- D16908
by:

Great staff great products grade A service from customer service will definitely order from etrailer again


Comments
Hi I need to know at what temp. is exactly activated Thanks
-- comment by: LIVIU - 08/09/2013

This 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.

-- Etrailer Expert Patrick B - 8/9/2013


- D16908
by:

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



- D16908
by:

lasted over 5 years on 24/7/180 on green house just ordered new one.



- D12903
by:

Review from a similar Dyno-Cool in Radiator Fans


Great cooler upgrade for my 1997 GMC Yukon! Little delivery damage, but was so easy to bend those fins back to original shape so no worries! Nice that you had proper dimension measurements online, so it was easy to figure out what kind I can fit in my truck. Complete kit had everything I needed to get it done! Modified old cooler bracket little bit and that was it. Works great!



- D12902
by:

Review from a similar 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.



- D12903
by:

Review from a similar 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.



- D12733
by:

Review from a similar 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.


Comments
We towed our travel trailer 7500 miles last fall almost coast to coast and back. The trailer weighs 4400 lbs loaded. The Ridgeline’s towing capacity is 5k lbs. I kept our speed at around 65 mph. The truck was capable even in mountain terrain. The transmission never overheated. I did change the fluid once during the trip and again when we got back. The cooler worked. Never once did I get that burning smell. I’m almost certain that the cooler saved us a huge overhaul repair. Thanks etrailer.
James - 06/12/2020


- D12904
by:

Review from a similar Dyno-Cool in Radiator Fans


I used this cooler on a 2004 Chevy Silverado. The accessories were not needed because I needed longer hoses and fabricated my own mounting. I think the hose clamps and the hoses could be better quality. The cooler does work very well.



- D12906
by:

Review from a similar Dyno-Cool in Radiator Fans


Can't say anything bad about the unit. It was installed in a Jeep Grand Cherokee that I use to haul trailers occasionally that weigh up to 6000 lbs. So far, I've never overheated the transmission at all, which I attribute to the addition of this cooler. Once again, thanks for a great product.



- D12902
by:

Review from a similar Dyno-Cool in Radiator Fans


Not installed yet but its the best price i could find.



- D16909
by:

Review from a similar Dyno-Cool in Radiator Fans


This fan looks like it will do a great job. No more overheated transmission. Pulling a trailer in stop and go traffic on a 100 degree day - No problem :-)



- D12906
by:

Review from a similar 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.



- D12906
by:

Review from a similar Dyno-Cool in Radiator Fans


for my 06 colorado with the 2.8l i4. also used the derale trans oil thermostat to help with warmup of trans fluid in winter. trans never gets above 190F now and the engine will overheat (212F) before the trans does. perfect upgrade for a light duty truck/van/car to provide a little bit of cooling at a compact size. very satisfied with the product



- D12904
by:

Review from a similar Dyno-Cool in Radiator Fans


Dropped transmission temperature buy 25-30 degrees. I would recommend for anyone trying to help out their tranny.



- D12901
by:

Review from a similar 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.



- D12906
by:

Review from a similar 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!



- D12906
by:

Review from a similar 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.


Comments
Our installers typically use some transmission fluid to make installing the rubber hose on the Insta-dapt fitting easier.
-- Etrailer Expert Rachael H - 06/13/2018


- D12906
by:

Review from a similar 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.



- D12906
by:

Review from a similar 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.



- D12906
by:

Review from a similar 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.



- D12904
by:

Review from a similar 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!



- D12906
by:

Review from a similar 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.



- D12904
by:

Review from a similar 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.



- D12903
by:

Review from a similar 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.



- D12903
by:

Review from a similar Dyno-Cool in Radiator Fans


It appears that my transmission temp dropped about 40-60° adding this cooler. The hose was pretty hard to attach to the cooler, even with lubrication. The hose was also to small for my vehicle so I had to source other parts to make it work. I installed it on a 2017 explorer.


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Ask the Experts about this Derale Radiator Fans



  • Is Derale Radiator Fan # D16908 a Pusher or Puller and Can it be Used on a Motorcycle
    The Derale Radiator Fan, # D16908, can be used as a pusher or a puller fan, depending on where it is mounted. The motor is reversible. You could use it on a motorcycle, provided that it fits in the space you have available on the bike. The dimensions of the fan are 8-1/8 inches wide x 8 inches tall x 2-1/4 inches deep. You will also need to make sure the bike has an electrical system capable of supporting the 5.3 amp power draw of the fan. I have included a couple of FAQ articles below...
    view full answer...
  • Recommendations for an Electric Radiator Fan for a 1984 Datsun 720 2.4L V6
    In regards to fans, it is not the size that matters it is the airflow. Electric fans are not necessarily vehicle specific. If you have # D16908 that you have referenced, it puts out 450 cubic feet of air per minute. This is not very much and a fan that can generate more would be needed. Typically, a 6 cylinder motor requires 1,600 to 2,000 cubic feet per minute. The fans that you could use largely depends on the space you have in the engine compartment to mount them. I recommend getting...
    view full answer...
  • Using Derale Electric Fan Part # D16908 for Remotely Mounted Transmission Cooler
    At 450 CFM (cubic feet per minute) the Straight Blade Electric Fan you mentioned, part # D16908, would provide plenty of airflow for the D13503 Transmission cooler. This has been confirmed with Derale, the manufacturer. If you need a thermostat control for the fan, use part # D16769.
    view full answer...
  • Derale Dyno-Cool Fan and Thermostat Recommendation for a Honda Generator Box Air Changer
    I spoke with my contact at Derale and he informed me that the probe from the Derale Adjustable Fan-Control # D16769 can register air and water temperature. You should have no problem using a Derale 8 inch Dyno-Cool Straight-Blade Electric Fan # D16908 fan with a # D16769 to move the air in your generator box. We do not have both of them in a package, but you can order them separately and they will perform together well.
    view full answer...
  • Recommended Derale Transmission Cooler Fan for 2008 Chevrolet Silverado
    Transmission fluid cannot really be over-cooled but you can make things easier by using a fan such as the Derale # D16308 that includes a power switch and adjustable thermostat. This will save you the effort of switching it on and off and provides consistent cooling regardless of engine speed. You'll want to confirm you have enough space for mounting the fan assembly. Please refer to the measured drawing I have included for you which has dimensions noted. The Derale # D16308 can be mounted...
    view full answer...
    Image 1 for
  • Electric Fan Recommendation for a 1999 Jeep Grand Cherokee with a 4.0 liter V6
    A 2,100 CFM fan should be plenty to cool the radiator of your 1999 Jeep Grand Cherokee with a 4.0 liter V6. A fan like the part # D16626 should work well. This is a 16 inch fan that can pull 2,175 CFM only requires 18.4 amps. I attached a help article on electric fans for you to check out as well.
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  • Do Electric Radiator Fans Have to be Mounted Directly Against the Radiator, 1982 Chevy Monte Carlo
    For the best performance, a radiator fan like Derale 12 Inch High-Output, Electric Radiator Fan, # D16925, should be mounted directly against the radiator. If there is a gap, less airflow will go through the radiator and it will not be as efficient. If you do not want to use the included mounting straps, I would find another way to mount it directly against the radiator for ideal performance. I have included a link to our FAQ article on electric fans for reference.
    view full answer...
  • Electric Radiator Fan for a 1995 Nissan Pathfinder
    The type of electric fan you use in your 1995 Nissan Pathfinder is going to depend on how much space is available under the hood. There are fans as small as 4 inches diameter and 2-3/8 inches deep and as large as 32 inches and 3-1/4 inches deep. There is likely more space in front of the radiator than behind it. A fan such as # D18217 is 17 inches in diameter and 2-5/8 inches deep. You would need to measure the available space to determine if this fan will fit or if you need to go smaller...
    view full answer...
  • Recommendation of Electric Fan for 1988 Ford Ranger With 2.9L Engine
    When choosing an electric fan for your vehicle you will want to make sure to get a fan that will give you the correct Cubic Feet per Minute (CFM) for the size of your engine. The CFM is how much air is being moved through your radiator in one minute. The typical CFM requirement for a 6 cylinder engine is 1,600 to 2,000. If your 1995 Ford Ranger is used for towing you will want additional airflow. It is always recommended to go with the highest rated fan. I am including a link to a FAQ...
    view full answer...

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