Best Truck Transmission Coolers

Works fine and wasn't difficult to install. I didn't take the bumper cover off. Worked from top and below. Fashioned an aluminum brace.

The Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient did not come with the correct radiator transmission fitting for my 2004 Toyota Tacoma doublecab Prerunner v6 automatic transmission truck. However, I was able to use the fitting provided as a "splice connector" between tubing sections. I did not have to cut or trim off any of the stock rubber tubing to make the splice connection, but I did choose to use a couple of line clamps to secure the tubing to the front frame crossmember. Because of existing AC condensor tubing, braces, and other items in the way, placement of the transmission cooler on my vehicle will ONLY fit in the upper passenger side of the radiator, in front of the AC condenser. It was extremely difficult to get the cooler into this position. Completely removing the entire front grille would have helped, but I chose NOT to because all of the 21 year old plastic clip grille fasteners would inevitably break and need replacement ($$$). I ended up accidentally bending some of cooler fins when trying to get it into position. Not sure if I can straighten out these bent cooler fins after the install but I am going to try. I also don't know how much additional transmission cooling I am now getting because I don't have a temperature gauge connected to my transmission. I simply have to trust the cooler is doing its job.

Well constructed. Could use more hose for the install. I had to buy another length to install it. In the photo you can see I fabricated brackets for it so it would be able to get better airflow. Not noticing a real big difference in cooling but I’m anxious to see how it goes when I tow my 29 ft. TT with my 17 Suburban with a 5.3 ltr. I’ve been towing without one with no issues but any help in extending the life of the tranny is worth it.

Keeps my Tundra’s transmission tamed, especially while towing.

Great product and great value for the price. I looked at the fancy aluminum pans that are twice the price, but decided on Derale. I felt this was a sturdier product especially for 4 wheeling. I tow a 10,000lb boat and my transmission has never been cooler. Seals well to the stock transmission and so far no leaks after a year. I highly recommend Derale.

I thank you for getting it so fast to me

Transmission cooler installation on 2012 GMC Yukon 5.3L. Top brace added for support.

So far so good, easy install

"02" F250 7.3 Super Duty I found the service from etrailer to be very satisfactory. The product arrived in good shape and on time. The on-line video was very helpful. Installing went smooth with one exception. As mentioned in many other on-line reviews, there was not enough hose supplied with the unit. While I had not problem with needing to purchase a small amount of hose, the package indicated that it was to be 5/16" ID. While the supplied hose was made in China and the walls of that hose where very flexible, the Gates hose, (made in the USA) was very rigid and would not go on the stud of the cooler, requiring a second trip to the Auto parts store to purchase 4' of 3/8" hose. A 12 mile round trip. Also, required the purchase of a knurled ended 5/16" hose connection and on qt. of tyranny fluid. Total added cost of $20.20. Have not towed with it installed yet.

This is my 1st after market trans cooler and i was always under the impressuon to get the biggest one that will fit. This is the biggest one without any modification. Easy install installed between a/c confessor and existing stock trans cooler bracket. I bypassed the engine radiator all together so I'm running 2 coolers the stock one and D13105. It's installed on a lifted with 35in tires 2012 silverado 6.2l 4x4 6l80 trans with the tow package. It's May 22 and 93 degrees the avg every day running temp before install was 193 now my running temp is 142, I ccouldn't believe how much of a difference the cooler made. I haven't tried it in 4x4 yet but I'm sure it's going to be just as good. This coming weekend is memorial day so I'm planning a weekend on the beach going to do some off road 4x4 and for sure pulling some stuck people out of the sand. If i can post and update of temps from the weekend I will .

Fast service and delivery. Also installed the temp gauge will see how much this will cool down this summer.

George did a fine job taking care of my order. Plus I saved some money going through this company. Thanks

Great product, I’m currently in the middle of the installation.

I put the transmission cooler on a 2006 ram 2500 it keeps it 30° cooler than the OEM transmission cooler

Wanted to give my Honda better ability to handle a tow. this baby does the job. Transmission definitely cooler operation since the install. The install was simple and straight forward.

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.

I have been happy with the Derale transmission cooler. Installation was simple enough and one year later it is still working fine

i recived my Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class I -Extra Efficient - D13611 and i really like it its well built and it look to be heavy duty and am looking forward to installing it.thanks again for a great item.

Easy to install and has worked great on my '06 4Runner v6. A little extra piece of mind for the mountains. This size just barely fits on the passenger side of the radiator - there is a central, vertical support bar behind the grill that prevents a wider cooler from fitting.

This Transmission cooler really works well. It keeps my transmission much cooler while towing heavy trailers. I connected it in series with the factory coolers for a lower operating temperature. If towing or hauling heavy loads I recommend this plate cooler. Also plates remove more heat than tubes.

Very helpful,

Package was delivered on time. Installed it the next day. Didn't realise it's for oil and transmition. Just needed the oil cooler. Either way it's installed. Took a bit as I mounted in a different location than in front of radiator. Only did the oil. Already have a trany cooler. However I might loop into the other side for a trany and use the whole radiator. So far so good

Cooler was well built and fit my 2002 Silverado with some slight modifications to the existing bracing. It seems to cool well but I haven’t towed anything heavy yet in warmer temps to know how well it cools above the stock cooler.

Absolutely awesome!!!! Took 100 degrees out of the Trans! Pulling a trailer through the mountains. 100% recommended. It didn't fit quite perfect on my 2014 yukon and had to buy more hose but worth every penny spent! I will buy again

I had a continuous slight leak on my transmission pan that would not go away. I finally went shopping on line and found you sight while being impressed with the design of your product I ordered one from you. I received it in the mail very quickly and installed it. The installation was easy and everything matched my transmission. Filled the transmission with transmission fluid and after driving my motor home for a short while now have had no more leaks. Thank you for making a great product

Installed before retiring s from the Marine Corps, hauled just over 39,000lbs with my truck and she never came close to the red. Thank you for a great product and fantastic customer service.

Awesome product! Received it yesterday. Custom fabricated brackets for it to mount below my auxiliary trans cooler on my 07 fx4 f150. Installed the on off switch on out side of transmission and the fan works great!

Awesome remote transmission oil cooler. Attached at the rear under belly of a Toyota FJ Cruiser, 2007.

Have a 1998 Lincoln Mark 8 w/ 4 speed automatic which retails for no less than $ 4000.00 - Having this potential monkey on my back , I decided to invest in a trans cooler. Fabricated mounts and bolted on , used double flare connection to cooling line w/ barbed fitting ; barbed fitting @ radiator fitting. Used 2 hose clamps @ cooler, one clamp on each barbed fitting . Could only mount with fittings to left ,fluid leaves radiator , enters cooler @ top ( to reduce pump load ), comes out of bottom & returns to tranny. No trans temp. guage, but cooler gets hot @ idle, verifying cooler works . Well constructed and sturdy,easy to mount ; comes with instructions.

It’s been almost a year since I installed this transmission cooler. I would say it’s gone without a hitch, but THAT would be inaccurate. I also installed a hitch! I placed great confidence in this transmission cooler to do its job as my 2015 Honda Accord V6 served as my truck during our move this past year. Never a problem (ok, I’ll say it... It went without a hitch!). etrailer customer service was EXCELLENT! There was a question during installation that arose from my particular model of car having a Transmission Fluid Warmer that in effect made identification of the transmission outlet and inlet reversed according to the instructions. The technician actually read and considered what I was saying, instead of just assuming the instructions applied to my vehicle. Thanks to their input, I correctly reversed the directions and got the correct solution! BTW... I attached some pics of the correct hose routing for the 2015 Honda Accord V6. Note how you simply remove the short hose shown in the first pic, and connect the hoses from the transmission cooler! Note that I mounted the transmission cooler vertically so the hoses would reach. The last pic is showing the transmission fluid warmer (just as an FYI).

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!

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.

My vehicle originally did not have a transmission cooler. After warming up, my transmission temperature would typically be 100 degrees higher than the ambient air temperature, whether moving or stopped. Towing the largest enclosed U-Haul trailer (6'x12') would raise the temperature to about 120 degrees above ambient. After adding this cooler, the transmission stays about 70 degrees higher than the ambient air temperature on the highway, and 80-85 degrees above ambient while parked or driving in slow traffic. I haven't towed that same U-Haul trailer since adding the cooler, but towing a much larger (8.5'x20') enclosed trailer raises the temperature to about 110 degrees above ambient. If you can find a spot the cooler will physically fit, it should work for your vehicle. You may have to get creative to solidly mount it. I used an angle grinder to remove part of a factory brace. When doing work in this area of your vehicle, be careful not to puncture the AC condenser! If you do, like I did, you will have to replace it. Some AutoZone locations will rent a vacuum pump and manifold gauge set. Doing your own repair means the total repair cost is only the sum of the new AC condenser and refrigerant. The inlet/outlet NPT fittings on this cooler need to be tighter than you think. I was worried about stripping the threads, and didn't tighten them enough at first. I ended up removing my bumper cover multiple times to tighten them until they stopped leaking. I found the best way to detect a leak was to zip-tie a folded paper towel below the fitting. If it turned red, there was a leak. For my application, I would have preferred built-in 3/8" hose barb inlets instead of the 1/2" NPT fittings.

Great quality! Simple installation, awesome product.

The fan is nice, the brass compression barbed fittings did not work. They leaked from both threads. I paid for fancy with a quickness 2 day shipping, took 5 days. I’m just glad I wasn’t too much in a hurry to cool my dads transmission for his road trip.

Everything was included to install the cooler and instruction sheet is useful. Hardest issue is where to mount. No leaks so far. Should help trans temps while towing.

No problems, Works great