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Expert Answers about Radiator Fans


  • Thermostat Recommendation for Use with Derale Electric Radiator Fan-and-Shroud Assembly # D16928
  • The Derale 29" High-Output, Electric Radiator Fan-and-Shroud Assembly # D16928 comes with everything needed except a switch setup. The best switch solution will be a thermostatically controlled one so that you don't have to worry about manually switching the fans off and on. Since this is a dual fan setup the best solution will be the Derale Dual-Fan Adjustable Fan-Control Thermostat with Push-In Radiator Probe # D16788 which will control each fan independently to preset temperatures.
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  • What is Individual CFM Rating of Each of the Fans of the Flex-a-lite Dual Electric Radiator Fan
  • Each of the fans of the Flex-a-lite Dual 13-1/2" Electric Radiator Fans w/ Shroud # FLX295 can flow up to 2,300 CFM. Also worth mentioning is that the likelihood of one of the fans failing is very low.
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  • Electric Fan with Thermostat for 2008 Chevy Express 3500 with 6.0 Liter
  • For your 2008 Chevy Express 3500 van with a 6.0 liter engine the Flex-a-lite 16" Trimline Reversible Electric Radiator Fan # FLX116 that you referenced is a confirmed fit and would work great. It can move 2,215 CFM which will be plenty to keep your coolant cool and then for a thermostat kit you'd just want the part # FLX31149.
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  • What Parts Are Included with the Flex-a-lite 15 Inch Black Magic Xtreme S-Blade Fan
  • The Flex-a-lite 15" Black Magic Xtreme S-blade Fan w/ Thermostat Controller - 24V - Reversible # FLX18024 is sold as a fan assembly with motor and thermostat, but does not come with any mounting hardware as the installation will vary across applications.
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  • Will an 18 Inch Radiator Fan Blade Fit On a Hayden Fan Clutch
  • The Derale 18-inch diameter radiator fan blade # D17918 will fit just fine with your Hayden fan clutch number HDA-2793 because it fits most factory clutches. The fan clutch HDA-2793 is the equivalent to the Derale # D22166 and the replacement fan blade is # D17918. I included a couple informative articles for you too.
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  • Electric Fan Recommendation for 2001 Chevy 2500HD with 6.0L V8 Gas Engine
  • For a truck with as big of an engine as your 2001 Chevy Silverado with a 6.0 liter engine that is going to be towing a trailer you'd want to go with a fan setup that pulls more CFM than the # FLX116 which moves 2,215 CFM. That's basically the bare minimum CFM recommended for a small block V8 so for your truck with a larger small block that's towing you'd want more like 3,000 CFM like the Flex a Lite # FLX180.
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  • Dual Electric Fans for 95 Jeep Grand Cherokee 5.3 V8
  • Dual fans have a few advantages of single fans. They cover a wider portion of the radiator so they can effectively cool more surface area that a single fan that moves the same amount of air, there is basically a back up fan if one would have an issue, and there is more fan speed variation allowed. The Derale part # D16927 that you referenced would fit your 1995 Jeep Grand Cherokee with a 5.2 liter V8 and would work great as it can move up to 4,000 CFM.
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  • Radiator Fan Recommendation for 2005 Jeep Wrangler TJ 4.0L V6 Engine
  • I reached out to my contact at Flex-a-Lite and was able to confirm that the 16" Flex-Wave Electric Fan # FLX236 does in fact install directly onto the radiator core. The 16" Flex-Wave LoBoy Auxiliary Electric Fan # FLX238 is also a universal fan that installs directly onto the radiator, but it's slightly thinner and provides more air flow at 3,000 CFM, so if you don't need the reversible feature, this is the one I recommend for your 2005 Jeep Wrangler with the 4.0 L V6 engine. For a...
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  • Is Flex-a-Lite Radiator Fan Made in USA
  • Yes Flex-a-Lite fans like the # FLX116 are made in the USA.
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  • 2100 CFM Derale Electric Cooling Fan
  • I contacted TPI Corporation in Tennessee for information about the fan part 20-3114 and I was advised that this item is not one of their valid part numbers. However, we do have a Derale fan that might work well for you, their 2-Speed 2100-CFM High Output 14-Inch electric fan # D18214 which fits your available space dimensions. All fans appear on the linked page and dimensions are provided in the specs to help you select your best option.
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  • How Does the Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly Attach
  • The Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly part # D16927 is designed to attach to an existing radiator flange which you can see in the attached photo below. It comes with the needed angled brackets for this as well as everything else you will need for installation.
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  • Benefits of Using Electric Fan that Only Covers Portion of Cooler
  • The Derale 8" Tornado Electric Fan # D16508 referenced in your question can be used as a pusher or puller. The fact that the fan will only cover a portion of the transmission cooler will still provide benefit, as the fluid from the affected area will be dispersed from there through the tubes and lines. So while the fan is only providing additional airflow to part of the cooler itself, it will still have a positive effect on the entire system. Pushing air towards the radiator will not...
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  • Does Derale 20 inch Rigid, Steel-Blade Race Fan, # D17320 Spin Clockwise or Counter Clockwise
  • If you are in front of the vehicle, facing the engine, the standard rotation of the Derale 20 inch Rigid, Steel-Blade Race Fan - Belt Driven, # D17320, would be a clockwise rotation.
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  • Is There a Custom Installation Kit Available For the Flex-a-lite 16 Flex-Wave Electric Fan
  • There is not a vehicle specific installation kit available for the Flex-a-lite Flex-Wave Electric Fan # FLX236 but it does install by mounting directly to your radiator core using nylon bolts and push nuts. This will be a great solution for your 2003 GMC Yukon XL when towing your camper and will work to keep you from overheating, especially if you tow a lot in areas with restricted air flow or at low speeds. If you want to have your fan turn off when the air conditioner is going you'll...
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  • Recommended Thermostat Control Switch For Flex-a-lite 16" Flex-Wave Electric Fan
  • The recommended thermostat switch for the Flex-a-lite 16" Flex-Wave Electric Fan part # FLX236 in the 1999 Ford F-250 4x4 is Flex-a-lite Adjustable Temperature Controller for Electric Fan part # FLX31149 which will actually read the engine coolant temperature to activate the fan when needed. It will also turn the fan on when you have the AC running in the truck. I have attached the wiring diagram for the thermostatic controller for your reference.
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  • How to Determine if Derale 32" High-Output, Electric Radiator Fan-and-Shroud Assembly Will Work
  • Even though the engine components we carry are meant to be a supplement to the OEM components we have heard of people using them as replacements for OEM products. If you want to try using the Derale 32" High-Output, Electric Radiator Fan-and-Shroud Assembly # D16934 as a replacement then you need to make sure the 4,000 CFM (cubic feet per minute) is a high enough rating and that the overall dimensions of this product will fit your aplpication. I have attached a diagram showing the dimensions...
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  • Recommended Radiator Fan 1989 Chevy Camaro
  • The best radiator fan for your 1989 Chevrolet Camaro would be the largest on you have space available for behind the radiator in front of the engine. With that being said, Derale has several electric fan options that will do a great job of keeping the 400 small block engine cool. I recommend the Derale High-Output, Electric Radiator Fan-and-Shroud Assembly part # D16928. The overall dimensions of the fan assembly are 28-5/8" wide x 13-7/8" tall x 3-1/4" deep. The fan assembly will take...
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  • Can Derale Electric Fan D16916 be Used as a Pusher and a Puller Fan
  • The Derale Fan part # D16916 that you referenced is set up to be either a puller or pusher and would not lose any air flow in either configuration.
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  • Will the Derale Radiator Race Fan # D17420 Replace the Factory Fan in a 1988 Ford F-250
  • The Derale 20 Inch Race Fan, # D17420, has a 19-7/8 inch diameter so it will fit within your 22 inch shroud. One thing to keep in mind with this fan is that it is a race fan which means it will require you to remove your fan clutch as well. It is designed to pull more air as your engines RPMs increase and not to be regulated by a clutch. Removing the factory clutch will effect the length of the spacer that you need. Once you have the clutch removed, you will want to measure from the...
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  • Transmission Cooler Fan Recommendation to Give Additional Airflow for Plow Truck
  • Yes, installing the Derale 7" Tornado Electric Fan # D16507 in front of your transmission cooler will give you additional cooling power for when you are at highway speeds and your plow is blocking airflow.
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  • Recommendation for 16 Inch Reversible Electric Radiator Fan with Thermostat
  • For a 16 inch electric fan that comes with a thermostat you can use # D16316. It can also be mounted as a pusher or puller. If you want to go with the Flex-a-lite fan you can add the Flex-a-lite Adjustable Temperature Controller for Electric Fan Item # FLX31149. I have linked a video review of this part for you.
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  • Electric Fan Kit Recommendation for 2010 Toyota Tundra to Replace Stock Fan
  • The only dimension the Derale 28-1/4" Dual, High-Output Electric Radiator Fan w/ Aluminum Shroud # D66838 doesn't perfectly match is going to be the height. This is 17 inches tall whereas you listed yours being 27 inches tall which is taller than normal. Aside from that this would be a great fit.
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  • Recommended Engine and Transmission Coolers for 2005 Dodge Dakota SLT V8
  • Towing will put an additional heat burden on both your engine cooling system and your transmission. A higher capacity radiator will certainly drop your engine temp when you're towing with your Dakota, but an easier and less-costly alternative is to simply add a powered fan like the Derale # D18217. Radiator upgrade are usually needed only for extreme applications like racing. This fan is a push or pull type so it can be mounted on the inside of your radiator (space permitting of course)...
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  • Determining Fit of Replacement Radiator Fan for 2002 Dodge Ram 3500
  • Derale's radiator fans are designed as a universal-type fit item so that the fans can fit a wide variety of vehicles. To be sure that either of the fans you are looking at, the Derale 20 Inch Rigid, Steel-Blade Race Fan, Belt Driven # D17320 and the Derale 20 Inch Fan Clutch Fan # D17120, will fit well on your 2002 Dodge 3500 the best solution is to measure the space available for the radiator fan. I spoke with my contact at Derale and he confirmed that measuring is the best way to determine...
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  • Can an Electric Radiator Fan be Installed in a 2008 Chevy Express 3500
  • First, you will need to determine if you can fit a puller style electric fan such as # FLX264 between the radiator and the motor. A puller fan like this sits behind the vehicle radiator and pulls air through. You would need to have greater than 4-1/2 inches of depth for this fan to fit. It is also 27 inches across and 29 inches tall. Provided you have the space you can use it on your 2008 Chevy Express 3500. If there isn't enough space behind the radiator you could mount a pusher fan...
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  • Electric Radiator Fan Recommendations for a 2008 Chrysler Aspen with 5.7L Engine
  • Is the fan set up currently on your 2008 Chrysler Aspen belt driven? In any event you will need to determine if it is pushing air or pulling air. The fans that you have referenced, # D16927, and # D16919 are for puller applications only. What I recommend is going with the most CFM that you can in a fan or fans that will fit in the space provided. You do not always have to remove the factory set up in order to install an electric fan. You just have to make sure that the aftermarket fan is...
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  • What is RPM Limit of Flex-a-lite 18" Clutch Fan # FLX6718
  • If you can keep the RPM under 4,000 the Flex-a-lite 18" Clutch Fan # FLX6718 is going to work well. If you exceed that you may have problems with it as well as problems with the engine! I doubt it would come flying apart but the fan blades may end up flattening out to the point they wouldn't be as effective.
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  • Can you Sandwich Cooling Fans Between Coolers
  • As long as the Flex-a-lite Dual 15" S-Blade Electric Radiator Fans with Shroud Assembly part # FLX293 was mounted in front of the radiator and transmission cooler in a way that pulled air through the fan into the coolers than you would not need to remove the factory clutch and radiator fans as both the factory cooling fans are set to pull air into the coolers. However, if the Flex-a-lite Dual 15" S-Blade Electric Radiator Fan was mounted in front of the radiator and transmission coolers...
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  • 4,000 CFM Fan Kit Recommendation for 1974 Chevy Corvette with 502 Cubic Inch Big Block
  • The shallowest fan setup we have that can move 4,000 CFM of air would be the Derale High Output Fan and Shroud part # D16928 as it measures only 3-1/4 inches deep. Height and width though are 28-5/8 inchs and 13-7/8 inches. If you need a smaller height and width but can get by with a slightly deeper setup we have the Derale part # D16826 as well. This measures 25-5/8 inche wide x 17-1/8 inches tall x 4 inches deep. Having either fan setup as a puller instead of a pusher will get...
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  • Electric Fan and Shroud Kit Recommendation for 1995 Dodge Ram with 5.9 liter Engine
  • We have electric fan and shroud kits that would work great most likely for your 1995 Dodge Ram but I am going to need to know the size of the area behind the radiator to give you the best recommendation. I tried looking up that dimension and it looks like most places are saying it's right at 26 by 19 inch which is pretty standard so that would make sense but I would want you to verify that first before ordering. We have the dual fan and shroud kit part # D16927 which would be a great...
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  • Availability of Replacement Fan for Derale Dual Radiator Fan-and-Shroud Assembly # D16812
  • The Derale High-Output, Dual Radiator Fan-and-Shroud Assembly, part # D16812 is the only electric fan I have in the 25 inch diameter. If one fan goes out it can be replaced with just one fan. The replacement fan will be the Derale 12 Inch High-Output, Electric Radiator Fan, part # D16925. If you wanted a higher CFM dual fan assembly The closest size I would have would be the 26 inch diameter electric fans. I have three of them that have a 4,000 CFM capacity. I am including a link to...
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  • Electric Fan For 1999 Ford F250 4x4 Light Duty
  • Yes, the Flex-a-lite 16" Trimline Reversible Electric Radiator Fan # FLX116 is a confirmed fit for your 1999 Ford F250. As far as other items to consider if you're towing include a transmission cooler kit # D12906 with required adapter # D13025 is an additional upgrade that would help avoid potential overheating issues.
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  • Dimensions of Derale 26 Inch Dual High-Output Electric Radiator Fan-and-Shroud Assembly # D16927
  • I have included a picture with dimensions of the Derale 26 Inch Dual High-Output Electric Radiator Fan-and-Shroud Assembly, # D16927. If the Derale 26 x 18 Inch Dual High-Output Electric Radiator Fan-and-Shroud Assembly, # D16927, covers at least 80 percent of your core (fin area only, not including tanks) this is the correct part for your 1970 Chevrolet Nova with the big block.
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  • Powered Fans to Correct Cooling Issue with 427 Big Block in 1966 Chevrolet Chevelle SS
  • For the sake of your really outstanding vehicle I want to suggest that first you investigate whether there is any issue with your coolant/water pump that could be causing the engine to run hot. A dual-fan set up with aluminum radiator should do a pretty good job of cooling even a big block 427. We can certainly help you with new cooling fans but if there is some other underlying issue involved that would best be squared away first. If there is an internal cooling problem then new supplementary...
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  • Will Converting Dodge Dakota to Electric Fan Increase Fuel Mileage
  • Electric fans do improve fuel mileage and power since they allow the accessory belt drive to turn with less resistance. I did the same conversion on an older Camaro years ago and it cooled better, improved mileage, and power. You'll have to measure your current shroud to determine what the best fan setup would be. The Flex-a-lite 15" Black Magic Xtreme Electric Radiator Fan with Shroud # FLX180 measures 21-1/2" wide x 17-1/2" tall x 4-3/16" deep and can pull 3,300 CFM so it would be a great...
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  • Combination Oil Cooler and Transmission Cooler with Fan Recommendation for 2015 Chevrolet Traverse
  • For a combination oil cooler and transmission cooler that comes with it's own fan that fits your 2015 Chevy Traverse with a 3.6 liter engine you'd want the Derale Electra-Cool Combo Engine and Transmission Cooler Assembly w/ Fan # D15200 and then the multiple thread install kit part # D15752 and you'd be set.
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  • How to Determine if Vehicle Has Bad Fan Clutch
  • I would not ever recommend attempting to stop a radiator fan of a vehicle with a running engine...I suspect you have a bad fan clutch though if your fan doesn't seem to be turning like it should. Here's the recommended and easy way to test that. Before starting the vehicle for the day go out and spin the fan as hard as you can. If the fan rotates more than 5 times you have a bad clutch. A good clutch will normally stop before spinning 3 times if not sooner. You should feel some resistance...
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  • Electric Radiator Fans Compatible With 24 Volt Systems
  • I reached out to my contact at Derale, and all of the Derale products including the 17" High-Output, Electric Radiator Fan w/ Aluminum Shroud Assembly - 2,400 CFM # D16816, are only compatible with 12V. I do have another option for you. The closest fan we have to what you are looking for is the Flex-a-lite 16" Trimline Reversible Electric Radiator Fan - 24V # FLX11624. Although this is 1 inch smaller, it will work well with a 24V system. You may also be interested in the Mounting...
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  • Recommendations to Help Prevent a 1965 Lincoln Continental From Overheating at Idle
  • Going to a larger aluminum radiator will drastically help your 1965 Lincoln Continental stay cool. If you wanted to try a different fan setup I would recommend you get rid of the mechanical fan you have that pulls air through the radiator and go with an electric fan setup with a shroud like the # D16826. This will pull a ton more air through your radiator than a mechanical fan at idle so it should work very well for you. Fans that pull air through the radiator are much more efficient...
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  • Will 26 Inch Derale Dual Electric Radiator Fan Fit 1995 Jeep Grand Cherokee
  • The installation kits that come with Derail Electric Dual Radiator Fans like # D16927, are pretty universal in that they are designed to be compatible with as many vehicles as possible. I am confident that this fan will fit your 1995 Jeep Grand Cherokee. The brackets that come with the fan are designed to attach directly to the radiator, so you will need to make sure there is space enough for the fan. The dimensions are as follows: Overall dimensions: 27" wide x 18" tall x 3-3/4"...
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  • Electric Fan and Shroud Recommendation for Radiator that Measures 17 by 22 inches
  • The Flex a Lite Fan with Shroud part # FLX180 matches the dimensions of your radiator pretty close at 21-1/2" wide x 17-1/2" tall and can be used as a pusher fan so it would be your best option. It also can flow 3,300 CFM so your engine will be kept very cool.
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  • 17 Inch Radiator Fan That Can be Used as Pusher
  • Although the Derale 17" High-Output, Electric Radiator Fan-and-Shroud Assembly - 2,400 CFM # D16919 is only designed to work as a puller application (behind the radiator) we do have an option for you. The Derale 17" High-Output, Electric, Single Radiator Fan - 2,400 CFM # D16217 will work great as a puller or a pusher application (in front of the radiator) like you were wanting. It is worth mentioning that typically fans do work more efficiently as a puller than a pusher. I have...
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  • Will Transmission Cooler Interfere with Engine Cooling
  • A transmission cooler has plenty of gaps between the coils and fins that will allow air to easily pass through it. The transmission cooler will not interfere with the cooling process in any way. I have linked you to some FAQ articles that you might find helpful.
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  • Do Dual Electric Fans Work in a 1996 V8 Jeep Cherokee?
  • You need to remove the stock radiator fan to make room for the 26 in dual electric fans part # D16927.
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  • Does Derale Race Fan # D17320 Move More Air Than Derale Flex Fan # D17019
  • The two Derale fans referenced, their 20-inch Race Fan # D17320 and their 19-inch Flex Fan # D17019, will offer similar performance at lower RPMs, but at higher RPMs the Race Fan will deliver more air volume. As a result it will also put somewhat more drag on the motor. This is because the race fan is rigid and its blades maintain their profile at all speeds, while the flex fan blades are designed to flatten out at high RPMs to allow the air flow from the vehicles speed to provide much...
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  • Can Direction of Derale 12" High-Output, Electric Radiator Fan # D16925 be Reversed
  • While the Derale 12" High-Output, Electric Radiator Fan # D16925 is intended to be a pusher fan only unless a custom shroud is made you could reverse the direction of the fan if you reversed the polarity.
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  • Replacement Radiator Fan For 1966 Oldsmobile 442 To Help With Overheating on Highway
  • If your existing fan rotates counter clockwise you need a reverse rotation fan. The general rule is if your vehicle has a "V" belt it is standard rotation. If your vehicle has a serpentine belt it is counter clock wise or reverse. You could use the Derale 18" Rigid, Steel-Blade Race Fan - Belt Driven part # D17418 to replace your current fan. It is the diameter of the fan and the RPM, not so much the depth that would make the difference. However, I recommend to add an electric radiator...
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  • Recommended Radiator Fan For 2012 Chevrolet Express Van
  • One thing to consider when installing a radiator fan is the amount of room you have for installation. I recommend installing a fan in front of the radiator. You will want a fan that has a high CFM(cubic feet per minute). If you have the room I recommend a fan like the Derale, part # D18217. This fan has a high output of 2,400 CFM on high speed and 1,800 on low. The fan overall dimensions are 16-7/8 inches wide x 16-7/8 inches tall x 2-5/8 inches deep. If you find the fan will not...
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  • Transmission Cooler Recommendations for a 2008 Ford F-150
  • Adding fans like # D16105 will optimize the cooling efficiency of the factory cooler but you are not likely to see additional benefits if traveling at highway speeds. The benefits will come with the vehicle moving slowly are stopped. What I recommend is adding a supplemental remote cooler with its own fan, like # D12733 or a kit like # D15950. The benefit is that you can mount this type of cooler where you have space and you will receive the optimum amount of cooling.
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  • Electric Fan and Shroud Kit for 1999 Dodge Durango
  • I looked up your radiator core dimensions and they are 23-1/4 by 22 inch so for a shroud and fan setup that would work well we have the Derale Dual Fan Shroud part # D66830 which matches the dimensions of your radiator well and can pull 3,750 CFM which will do a great job keeping your coolant cool. This also comes with a thermostat and a variable speed controller so that you can cool the radiator perfectly.
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  • How To Increase Cooling Power for a 1999 Dodge Dakota R/T
  • I do have a way to help cool down your 1999 Dodge Dakota R/T but the 5/8" pilot hole of the Derale 18" Rigid, Aluminum-Blade Race Fan - Belt Driven part # D17518 will be much too small to work with the factory fan clutch. Instead, I recommend first removing the factory clutch fan and installing the Derale 12" High-Output, Electric Radiator Fan part # D16925. This radiator fan will attach directly to your vehicle's radiator and will provide up to 2,150 CFM which will be more than sufficient...
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  • Does Alternator Need to Be Upgraded on 2000 Ford F-150 When Installing Flex-a-lite Electric Fan
  • When installing the Flex-a-lite Direct Fit Dual Electric Radiator Fan # FLX270 on your 2000 Ford F-150 with the 5.4L engine you should not need to upgrade the alternator. This unit features a power draw of just 28 amps so your stock alternator will be big enough. This electric fan will do a really nice job of improving the truck's overall performance, especially when towing. It can recover up to 17 horsepower and 20 foot pounds of toque when used to replace a factory clutch fan like...
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  • Swapping The Fan Blade On My 1997 Ford Ranger 2.3L
  • If the fan is cracking, the shroud is probably the next to go. Head gets to these older vehicles over time. I've had a 1988 Ranger with a swapped 4.0L and the fan was replaced for similar reasons. That being said, I highly recommend swapping out the whole assembly with something like this # FLX40. This way you don't run into any issues and have to swap parts again. I was happy with the whole assembly swap on my ranger and I think you will too. I've found that replacing everything now...
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  • Recommended Electric Radiator Pusher Fan Assembly
  • I have a solution for you, but you're not going to be able to flip the # D17618 over and use it as a pusher fan because the curvature on the blades would come in contact with the radiator (or wherever you're mounting this). It sounds like you need a pusher fan blade- which we do not have available at this time, but you can get an entire pusher fan assembly like the # FLX119 which has a 16" blade and moves 2500 cfm.
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  • Electric Fan and Shroud for 1996 Jeep Grand Cherokee with 5.2 liter Engine
  • For a fan and shroud setup confirmed as a fit for your 1996 Jeep Grand Cherokee with a 5.2 liter engine we have the Flex a Lite part # FLX180. This will fit and install easily and will do a great job keeping the radiator fluid cool as it can move 3,300 CFM.
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  • Fan and Shroud Setup for 1975 Chevy Camaro with 468 Big Block Chevy
  • The Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly # D16927 would work perfectly for you since it is 18 inches tall and 26 inches in width and moves quite a bit of air. This setup can flow 4,000 CFM which is perfect for a big block Chevy engine.
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  • How Much Cubic Feet Per Minute is Needed in an Electric Fan for a 2000 Ford F-250 Super Duty
  • Typically, a small block V8 engine would need 2,200 to 3,000 CFM. A big block V8 would need 3,400 to 4,500 CFM. I recommend going with the highest CFM in a fan that will fit in the available space on your Ford F-250. The fan that you have referenced, # D16934, would be plenty of air flow. This fan is designed as a puller only, and gets mounted behind the radiator to pull air through. You would need to have a space 31-3/8 inches wide, 15-3/4 inches tall, and 3-1/4 inches deep behind the...
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  • Can Flex a Lite Fan FLX236 Install on Vehicle that Had Manual Fan
  • Yes you can install the Flex a Lite fan # FLX236 on a 1989 Toyota Pickup but you'll also need a wiring kit/thermostat part # FLX31149 and you'd be set.
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  • Locating Correctly Rated Electric Fan to Cool Engine on 1986 Chevy P30 Chassis
  • We do have a large selection of electric radiator assemblies available, such as the excellent Derale 26" Dual High-Output # D16842 that you were looking at, but the exact CFM requirements to cool the engine in your 1986 Chevy P30 is going to be difficult to pin point. This is because the requirements will be different among vehicle manufacturers and will vary depending on your particular application (towing, long distance trips, outside temperature, etc). The Derale # D16842 has a high...
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  • Derale Fan and Shroud Assembly Compatible with 2010 Chevy 2500HD with 6.0L
  • I can't confirm a fit on your 2010 Chevy 2500 HD 6.0L with the Derale 29" High-Output, Electric Radiator Fan-and-Shroud Assembly - 4,000 CFM # D16928, but some simple measurements will confirm whether it will fit or not. This unit measures 28-5/8" Wide x 13-7/8" tall x 3-1/2" deep. The mounting dimensions are 25-5/8" wide x 11-3/8" tall x 1-1/2" deep. If this won't fit, you may want to consider the Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly - 4,000 CFM...
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  • Replacement Electric Radiator Fan For 2007 Ford F-150 4.2L Engine
  • I do have have an option for you but there is not an electric OEM fan replacement available for the 4.2L engine unless you go with a universal electric fan like part # D16831 that is a bit more cost effective than the Flexalite. As long as you have 24" wide x 15-1/2" tall x 4-1/2" deep of space behind the radiator, you shouldn't have any issues with installation. This dual fan combo is a high-quality cooling fan system that includes an aluminum shroud and mounting hardware. It moves...
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  • Is Derale 12 Inch High-Output, Extreme Skewed-Blade Electric Fan Quiet
  • For your application I recommend going with the Derale 12" High-Output, Extreme Skewed-Blade Electric Fan - 2,000 CFM # D16924 that you asked about as it can be used as a pusher or a puller. I reached out to my contact at Derale who said that they don't test their fans for decibels but this fan is the quietest that they have.
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  • Cooling Options For Chevy Express 3500 When Towing a 30 Foot Travel Trailer
  • Since you have already added an aftermarket transmission cooler to your Chevy Express 3500, you can make sure you have it mounted in the most efficient location for cooling. The ideal place to mount an aftermarket transmission cooler is behind the front grille but in front of the radiator of your vehicle. Adding an electric fan like the item you selected, Derale Radiator Fans, part # D16834, will help reduce engine temperatures and would be a good option. You will need to measure to...
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  • Electric Fan Setup Recommendation for 1996 Dodge Ram with 5.9 Liter Cummins
  • For a fan setup that would work well for your 22-1/2 inch wide setup the Derale 22-1/2" Dual, High-Output Electric Radiator Fan w/ Aluminum Shroud # D16830 would be a fantastic option assuming it would fit for a vehicle like your 1996 Dodge Ram with 5.9 liter Cummins that would need some serious cooling power. This setup has a shroud and dual fan setup that can move up to 3,750 CFM which would do a great job cooling the radiator. The fan diameters are 11 inches. Overall dimensions of...
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  • Powered Fan Shroud Recommendation for a 1956 Chevy Truck 454 Big Block
  • If you can fit the Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly # D16927 on your 1956 Chevy Truck it would work well and would help keep your engine temps down significantly. This fan can flow 4,000 cfm which would be a considerably higher amount than what you current flex fan is pulling. You will also free up a bit of horsepower by going with an electric fan as well. I attached a dimension picture for this fan setup for you to compare to your available space...
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  • Does Power Steering Reservoir Relocate When Installing Derale Performance Electric Fan Kit For Jeep
  • The power steering reservoir of your 2000 Jeep Wrangler 4-cylinder does get relocated when installing the Derale Performance Electric Fan Kit for 1987-2006 Jeep Wrangler # D20161 that you referenced. This is covered in the attached installation instructions and the kit comes with everything needed to cover this. I attached a picture I took from the install instructions too that covers what you'll need to do as well plus a link to an install video.
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  • Pilot Hole Size on Derale 20" Rigid, Steel-Blade Race Fan
  • The pilot hole on the Derale 20" Rigid, Steel-Blade Race Fan part # D17420 is 5/8" and the mounting flange pattern is 1-3/4" - 2-1/4" square.
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  • Is there a Direct Fit Electric Fan Kit for a 1987 Chevrolet Pickup
  • Direct fit kits are not typically available when swapping from mechanical to electric fans. The best thing to do is measure the backside of your radiator and figure out how much space you have. The kit you were looking at has an overall dimension of 31-3/8 inches wide, 15-3/4 inches tall, and 3-1/4 inches deep. Provided you have enough room for this assembly to fit, it should be able to be installed with no problem. Since you want a fan kit with that is controlled via a thermostatic...
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  • Electric Fan Recommendation for a Ford Ranger
  • 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 4 cylinder engine is 1,200 to 1,600. 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...
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  • How to Activate Derale 14 Inch High-Output, Electric, Single Radiator Fan
  • Good question; to activate the Derale 14" High-Output, Electric, Single Radiator Fan - 2,100 CFM # D18214 you can use either a manual switch or a thermostatic fan control, both of which we do have. The switch will allow you to simply turn the fan on or off when you deem appropriate, while the thermostatic control engages at its determined temperature, which in the case of this fan and control is 180 degrees. - Switch: Derale Lighted On/Off Switch for Electric Fans # D16740 - Thermostat...
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  • Replacement Radiator Fan Blade for 1997 Dodge Ram 3500 with 5.9L Cummins Engine
  • You can select a new radiator fan blade like the Derale # D17320 for your 1997 Dodge Ram 3500 5.9 Pickup by matching up the dimensions and mounting hole pattern of your OEM fan blade since these items are not vehicle-specific. The Derale # D17320 measures 19-7/8-inches diameter x 2-inches deep and has a 5/8-inch pilot hole. The slotted mounting holes provide an adjustment range from 1-3/4- to 2-1/4-inches. The linked page will let you review and sort all of our replacement fans.
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  • Are Fans in Derale Radiator Fan # D16927 Recessed Into the Shroud, Available Fans without Shroud
  • The fans are mounted to the surface of the shroud on Derale Radiator Fan, # D16927, for a total depth of 3-3/4 inches, but there is little to no extra shroud available to trim back (only about 5/8 of an inch at most), as the fan does protrude a little into the shroud. It is not recommended to modify the part as it will void the warranty and possibly cause unwanted performance. Fans can be purchased without the shroud attached. Take a look at the Derale Fan, # D18214. This fan can be...
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  • Universal Electric Fan For Radiator
  • It looks like you were interested in the Flex-a-lite 16" Flex-Wave Electric Fan - Reversible - 2,660 CFM # FLX236. This is a universal electric fan for radiators. It can attach to your Sierra's radiator using the included hardware. The fan can be mounted behind the radiator to be used a puller, or it can be mounted in front of the radiator to be used a pusher. Overall dimensions are 16" wide, 16-1/2" tall, and 3-3/4" deep. This is not completely necessary, but you could also use Flex-a-lite...
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  • How to Pick Out an Electric Radiator Fan for a 2001 Chevy Express 1500 with 5.7 Liter Motor
  • There isn't one specific electric fan for your 2001 Chevy Express 1500 5.7 liter. You will need to compare the available space you have to mount a fan to the dimensions of the available fans. Keep in mind that if you place the fan in front of the radiator it will need to be a pusher fan. If it is mounted behind the radiator it will need to be a puller fan. Fan # D16934 is a puller so it would have to go behind the radiator. This fan measures 31-3/8" wide x 15-3/4" tall x 3-1/4" deep...
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  • How Can I Tell If The Derale 26" Dual High-Output, Electric Radiator Fan Will Work For Me
  • The Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly part # D16927 is a universal fit option. We have not had the opportunity to test fit this product on a 1986 Oldsmobile Cutlass Supreme therefore, I cannot confirm whether or not modifications will be needed. The dimensions of this fan assembly are 26" wide x 18" tall x 2-3/4" deep. If you have this space available behind your radiator, then this fan will work for you. It is also important to note that these fans...
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  • Recommended Dual Electric Radiator Fan w/ Shroud for 1967 Chevy Chavelle
  • For your 1967 Chevelle I recommend taking a look at the Derale 26" Dual High-Output Electric Radiator Fan # D16842. This is a dual electric fan measures 26 inches wide, 18 inches tall, and 2-3/4 inches deep. It is . It has a 4,000 cubic feet per minute rating. In terms of depth this is the lowest profile dual fan unit with shroud that we have available. As long as you have the needed space on the vehicle to mount this unit, this will work great.
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  • RPM Rotational Speed Rating for Derale 18-Inch Fan Clutch Fan with Reverse Rotation # D17918
  • My contact at Derale confirmed that their 18-Inch Fan Clutch Fan with Reverse Rotation # D17918 is rated for rotational speeds up to 8000-rpm.
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  • Electric Fan and Shroud Recommendation for a 1952 Chevy 3100 Truck
  • I think your best option would be the Derale 17 inch High-Output, Electric Radiator Fan w/ Aluminum Shroud # D16816. You will want to check the dimensions to be sure that this will fit behind your radiator, but it has the same size fan as the # D18217 that you referenced plus a shroud.
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  • Can Electric Radiator Fan Replace Factory Unit on 2005 Chevy Express Van
  • If you have the space available, you should be able to replace the factory belt-driven fan on your Chevy Express 3500 with an electric fan like the Derale 32 Inch Dual Tornado # D16834. This particular model fan can be mounted on either side of the radiator, as a pusher or a puller. Its overall dimensions are 31-3/4 inches wide, 15-5/8 inches tall, and 3-1/4 inches deep. Because a belt-driven fan will use up power from the engine to turn, an electric fan will be an improvement with...
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  • Electric Fan Shroud Setup Recommendation for a 1970 Chevy Nova with a Big Block
  • Yes, the Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly # D16927 would work perfectly for you since it is 18 inches tall and 26 inches in width. This setup can flow 4,000 CFM which is perfect for a big block Chevy engine.
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  • T-Fitting Spec of Derale Performance Electric Fan Kit for 1987-2006 Jeep Wrangler
  • The Aluminum Adapter Thermostat Switch Assembly - or T-Fitting for short - on the Derale Performance Electric Fan Kit for 1987-2006 Jeep Wrangler # D20161 is a 3/8" NPT fitting. If you go to about the 6:00 mark of the linked install video you can see this part being installed in a Jeep Wrangler. I have also added a link to the install instructions for you to check out.
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  • How are the Fan Blades of the Derale 18 inch Rigid, Steel-Blade Race Fan, part # D17318 Made
  • I spoke with my contact at Derale and he informed me that the steel blades of the Derale 18 inch Rigid, Steel-Blade Race Fan - Belt Driven - 8,000 RPM, part # D17318, are made from stamped steel. If you wanted a fan that features stainless steel blades, and flattens out when sufficient airflow is present, therefore increasing fuel mileage and power I would recommend a Derale 18 inch Heavy-Duty, Stainless Steel Flex Fan, part # D17018.
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  • Replacement Fan for Derale Radiator Dual Fan Assembly 16833
  • I do believe that fan # D16918 is correct for the Derale fan 16833. To make sure you will need to measure the mounting dimensions and the fan dimensions of the old fan or the other one in the assembly. I have included a diagram that shows the measurements for you to view.
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  • Can a Small Radiator Fan be Used on a Motorcycle Oil Cooler
  • Derale 4" High-Output Extreme Paddle Blade Electric Fan - 125 CFM Item # D16104 could work but it is a puller application meaning it is meant to be installed behind a cooler core and pull air through it. You might not have the space for a puller fan on a motorcycle. The smallest fan we have that can be used as a pusher is # FLX106 which is 6-1/2 inches in diameter.
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  • Electric Radiator Pusher Fan for a 2004 Chevy TrailBlazer with 4.2 Liter Inline 6
  • Installing an electric pusher fan on your 2004 Chevy TrailBlazer will ensure it gets the optimum cooling all the time, even when towing. As long as the electric fan is large enough it can replace the need for a belt-driven fan. By large I mean the amount of air the fan can move. Derale 16" Dyno-Cool Straight-Blade Electric Fan with Thermostat Control - 1,550 CFM Item # D16316 can move air at a rate of 1,550 cubic feet per minute which is pretty good and most likely better than the belt-driven...
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  • How to Determine the Best Electric Radiator Fan for a 2006 Dodge Ram 1500 with 5.7 Liter
  • The electric fans we carry are not vehicle specific. You have to determine how much space is available in the area you want to install a fan or fans. The 4000 cubic feet per minute fans we carry, see link to the right, are the highest output we have available. Depth is probably going to be the biggest concern. Electric fans # D16934 are the thinnest overall at 3-1/4 inches deep. The next step down in terms of air flow is # D16834 at 2700 cubic feet per minute. But it is also only...
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  • Is a Radiator Fan Supposed to Spin Freely By Hand When the Engine is Off and Not Running
  • If there is a fan clutch between the fan and radiator on your vehicle, then you will be able to turn the fan by hand when the engine is off and not running. If there is no clutch, the fan would be difficult to turn because you would have to turn the fan and the pulley, which are turned by a belt. If the fan is turning freely with no clutch, then there is a problem with either the belt being loose or the pulley will need adjustments. A fan clutch will look like part # D22175, just as...
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  • Can the Derale Electric Paddle Blade Radiator Fan # D16104 Provide Airflow in Either Direction
  • The Derale 4 inch High-Output Extreme Paddle Blade Electric Fan, # D16104, is designed for puller applications only, so the fan must be mounted on the inboard side of the radiator to pull cooler outside air into the engine compartment and over the radiator. The smallest reversible air flow fan that we carry at this time is the Derale 7 inch Tornado Electric Fan, item # D16617. This fan can be installed as a pusher fan on the forward side of the radiator or as a puller fan on the inboard...
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  • Availability of an Auxiliary Electric Fan That Will Provide Efficient Cooling on a Class C Coach
  • The actual CFM rating that you will need to properly cool you radiator, engine, and other cooling components is relative to your driving situations and habits. The general answer is the higher the CFM then more air will be pushed through the system. Typically, a big block V8 will need 3,400 to 4,500 CFMs to operate efficiently. However, this could be higher depending towing and driving situations. Since your Ford has a V10 engine, I suggest looking at fans with 5,000 CFM and higher to...
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  • How to Upgrade a 2006 Hummer H2 For Towing
  • I do have some options for you but the radiator cooling fans are not typically the weak point in a towing setup. The factory clutch fan and or electric fans (if equipped) will be sufficient for most so long as you are towing within capacity. If you are having issues with the engine overheating then you most likely have other issues going on (i.e. stuck thermostat). With that being said, if you just want to upgrade to an electric fan setup then they don't really offer any exact fits for...
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  • What Is Needed To Install the Derale Electric Radiator Fans
  • I do have everything that you need to use the Derale 27" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly part # D16837 but it does not come with any of the wiring or relays needed to power the fans as Derale stopped including them. It simply comes with the fans, shroud, and mounting bracket/hardware. In order to wire the fan up I recommend using either the PWM Fan Controller part # D16795 or the Derale Dual-Fan Adjustable Fan-Control part # D16788. The main difference between...
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  • Does the Derale 26" Dual Electric Radiator Fan Assembly # D16927 Come with Wiring and Relays
  • The Derale 26" Dual High-Output, Electric Radiator Fan-and-Shroud Assembly # D16927 actually comes with wiring and relays needed to install it. If you wanted to add more wiring I'd use 10 gauge wire but in reality it should be fine with what comes with it.
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  • 4,000 CFM Radiator Fan and Shroud Recommendation for Trans Am with LS3 Engine
  • The Derale 25-5/8" Dual High-Output, Electric Radiator Fan w/ Aluminum Shroud and Vents # D16826 would be a great choice for a fan setup for your 2001 Pontiac Trans Am with a LS3 engine. For a thermostatic controller for the fan setup you would want the # D16788. This setup will flow 4,000 CFM which should do well to cool your modified LS3 engine that I am jealous of. I have a heads/cam LS1 in my 1998 Trans Am, but few engines have the potential as the LS3.
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  • Recommended Electric Cooling Fan for 1970 Ford Mustang with Cleveland 351 Engine
  • The Flex-a-lite 15" Black Magic # FLX160 is the best available cooling fan we've got that would fit on your 1970 Ford Mustang. This fan provides up to 3000 cfm of air movement and can be used as a pusher or a puller fan to help cool down your engine, and because it's not belt driven it will doesn't rely on engine RPMS to provide maximum cooling. I've linked a short video on this fan for you to have a look at.
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  • Dual Fan and Shroud Setup Recommendation for a 1993 Jeep Wrangler
  • The best solution I could provide for you would be the Derale Dual High Output Fan with Shroud part # D16826. This setup will pull 4,000 cfm which should help keep your engine coolant from overheating. A mechanical fan can pull a great deal of air, but that's only when the engine is revved up high. An electric fan can pull it's max amount of cfm regardless of engine RPM so it will cool better than a mechanical fan.
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  • Are Extra Parts Needed When Installing Derale Radiator Fan and Thermostat on 1967 El Camino
  • I spoke with my technical contact at Derale and he assured me that when you install the Derale Radiator Fan # D16826 along with the Derale Adjustable Thermostat # D16789 on your 1967 El Camino you will not need any additional parts for a successful installation. You do not need any additional relays.There is a 50 amp circuit breaker included in the thermostat kit.
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  • Vehicle Battery Draining After Installation of Derale Dual High-Output Radiator Fan # D16927
  • The 85-amp alternator in your vehicle will deliver its full current output only at highway speeds when RPMs are high. In typical around-town driving it will deliver only a fraction of its rated current and only about 40 amps at idle. If you have other current-hungry electronics in your vehicle, for example a powerful audio amplifier and/or a CB radio system, then the combination of power draw from these items together with the Derale fan may be taxing your alternator. You certainly...
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  • Transmission Cooler and Fan Recommendation for a 2010 Nissan Titan SE Towing Travel Trailer
  • A supplemental transmission cooler would absolutely help keep your transmission fluid temperatures down on your 2010 Nissan Titan. Since the heat issue you described is when you are backing your trailer up your best option would be a cooler with a fan since there would be limited air flow while in reverse at slow speeds. Another great thing about the coolers with fans is that you can basically mount them wherever you want since the fan provides all the airflow needed. For that I would...
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  • Availability of Radiator Fan for 2001 Dodge 2500 Cummins 5.9L Engine
  • Sounds like you are looking for a direct-fit, bolt-on Flex-a-lite dual electric-fan system for your 2001 Dodge 2500 Cummins. The # FLX262 fits 1994-2002 Dodge Ram trucks with the 5.9L Cummins diesel. This dual 15 inch electric fans with shroud measures 37-1/4 inches wide x 20-1/4 inches tall x 4-1/4 inches deep. The replacement 15 inch S-blade fan blade for the Flex-a-lite Fan is # FLX31016K. I have linked both of these products to this page for your convenience.
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  • Can Derale Tornado Electric Fan be Used in Front of Transmission Cooler
  • Yes, you can technically install the Derale 9" Tornado Electric Fan # D16509 in front of the transmission cooler of your 2011 GMC Yukon XL but it may be that you are getting diminishing returns. This fan is unique in that it can be used as a pusher or puller application so I recommend instead that you install this fan behind the radiator which is going to maximize your cooling efficiency.
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