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Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient

Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient

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11" Wide x 12" tall x 7/8" deep, efficient heat exchanger will prolong the life of your transmission and improve its overall performance. Specifically designed for vehicles with late-model, electronic overdrive transmissions. Lowest Prices for the best transmission coolers from Derale. Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient part number D13504 can be ordered online at or call 1-833-496-1390 for expert service.
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Derale Transmission Coolers

  • Plate-Fin Cooler
  • Full-Size Truck
  • SUV
  • With 11/32 Inch Hose Barb Inlets
  • Standard Mount
  • 11W x 12T x 7/8D Inch
  • Derale

11" Wide x 12" tall x 7/8" deep, efficient heat exchanger will prolong the life of your transmission and improve its overall performance. Specifically designed for vehicles with late-model, electronic overdrive transmissions.


  • Prolongs life of transmission
  • Improves overall performance
  • Prevents heat-related failures
  • Has furnace-brazed aluminum construction and 3/4" wide turbulator plates for more efficient cooling
  • Includes complete mounting kit, OEM spec hose with stainless steel clamps and Insta-dapt radiator adapter
  • Recommended for full-size trucks and SUVs


  • Inlets: 11/32" hose barb
  • Overall dimensions: 11" wide x 12" tall x 7/8" deep
  • Distance between inlets: 10-1/4"
  • Mounting dimensions: 10-1/2" tall by either 5-1/4" or 6-3/4" wide
  • 1-Year warranty

Note: The Derale Insta-dapt radiator adapter fits most vehicles with 5/16" transmission lines, but not all. In some cases, additional fittings or alteration of the OEM lines or hoses may be required for installation.

One of the more popular cooling systems available, the radiator-style, plate-and-fin heat exchanger provides increased surface area so that fluids can spread out along the finned chambers to cool faster. In addition to the increased surface area, this cooler also features turbulator technology, whereby fluids are agitated continuously, not only to facilitate heat transfer, but also to prevent any undesirable drop in pressure.


13504 Derale Series 8000 Plate and Fin Heat Exchanger with Installation Kit
Hidden Hitch # HH41311
Hayden Automotive # 679

Item # D13504

Installation Details D13504 Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient - D13504

Average Customer Rating:  4.7 out of 5 stars   (733 Customer Reviews)

11" Wide x 12" tall x 7/8" deep, efficient heat exchanger will prolong the life of your transmission and improve its overall performance. Specifically designed for vehicles with late-model, electronic overdrive transmissions.

2009 Chevrolet Silverado

09' silverado 1500 5.3
Temps are down
15 to 25 degrees on test drive, No trailer. 105* heat index city, highway, a.c running
75mph 169-171* (factory 185*+)
55mph 165*
City stops 159*-163*
Idle after drive for 10 min in Sun 149*

Trimmed factory grill mount and welded on tabs, to put back in factory location (no picture of finished grill mount by itself) used factory holes on upper grill hood latch assembly. Only fault is u need to remove trans cooler to unbolt grill mount, but it's just a grill mount.

A year later all is perfect. Reworked my hose connections just to make it better. I haul my race car and gear so maybe 6000lbs my trans Temps have not seen over 190* maybe running 85mph up hill in 3rd gear for extended time it might hit 195* for a short time then after up shift it cools right back down on a hot humid summer day I plan to put a full aluminum radiator in to help just that much more.
Steven - 07/19/2021

2008 Chevrolet Silverado

I installed the cooler last weekend in my 2008 Silverado. I've included some
I made a strap to support the upper portion of the cooler and thru bolted
the lower to the existing bracket.
The hood bracket lower bolts had to be cut down to 1/4" length so they would
not contact the cooler.
The lower mount bolts had to be spaced to give the hood mount weld nuts
Now to see how it does with a trailer and the Pacific Northwest hills.

Randy, could you please forward me pictures of your install? I have the exact truck and your pictures would be helpful.ThanksPaul
-- comment by: Paul - 05/22/2013


Everything was included to do this simple upgrade. This was the perfect size for my application. The included hose was the perfect amount but, I would have been more comfortable if I had more.

2010 Chevrolet Colorado

I recently had the chance to use the Derale 8000 series transmission cooler during my last camping trip and was very impressed. I have a 2001 7.3 Powerstroke with 4" exhaust, S&B intake, gauges and a DP Tuner (60hp tow). I pull a 10,000 pound 5th wheel around Colorado. It seems like every where I pull in Colorado is up hill. It was common to see my transmission temp easily and quickly reaching 210-220 when towing mountain passes. Just before my last trip I installed the Derale cooler and the highest trans temp I saw was 190 at the top of Wilkerson Pass. What is more impressive was how quickly the temp dropped as I came out of the pass. For most of my trip my trans temp stayed around 180. While pulling in the city I saw temps around 200 which I assume was due to stop and go driving and not having the constant airflow through the cooler.

I installed the cooler right behind the stock front grill to the vertical post with self tapping screws (the grill still fits perfectly). I then used two thin strips of metal that I got from the hardware store and secured them to the cooler and to the second vertical post. I wanted the cooler in the front of my truck to get maximum airflow. I then spray painted the metal strips black just for looks. I did have to buy an additional 4' of hose due to the location where I mounted the cooler. The optional instal kit was simple. The adaptors screwed in my radiator with no problem at all. Once I decided to mount the cooler the entire project was quick and simple.

2009 Dodge Journey

2009 GMC Yukon XL towing a 7,800lb travel trailer from California to South Carolina.....
I don't believe the Yukon would have made this journey if it wasn't for the additional transmission cooler and engine oil cooler. Dragging the travel trailer through the mountains during the heat of the summer was taxing. However, my transmission never got above 190 F when it was over 100 F outside. Before installing the oil cooler AND transmission cooler, my engine temp would go to the 1-2 o'clock position and transmission temp would get up to 210 F. Highly recommend this product.

2013 Chevrolet Colorado

Hello Gang, I have a 2013 Chevy suburban and tow a 7K plus travel trailer. While we were towing to Colorado near Cripple Creek the temps were low 90's and my trans spiked at 230. Had to pull over to let it cool down. Now keep in mind my suburban does not have a HD trans cooler just the stock radiator cooler. Fast forward one year now my stock trans line is starting to leak from the rubber hose so it's time to change. Decided to order the larger trans cooler might not have been the best idea as it's larger then where I wanted to put it. So after taking off the front bumper, headlights misc brackets and lots of bolts I was able to get it up behind the "A" frame bracket in front of the radiator. Make sure if you go this route to put the rubber hoses and clamps on before installing because you will not be able to install the hose after. The bracket the holds the hood latch has openings that just happen to line up with the inside bolt holes on the cooler. Hoses facing down You will need to cut the bottom of the plastic out of the way to route the hoses under the frame. Cutting the original trans cooler line was easy and the rubber hose was long enough to make both connections so I did not need the adapter. If I used the adapter the rubber hose would be too short. On the bottom I used the foam pads between the cooler and the frame and secured it with heavy duty Zip ties. Can't wait to test it out this summer. I forgot to take pictures of the final install but did take one picture showing the "A" frame in the middle of the radiator. It fit's perfectly behind it.

1996 Toyota T100 Pickup

I installed this on my Toyota 1996 T-100 3.4: I picked up a piece of universal hangar strap, 2-8mmX1.25 bolts & lockwashers at building supply; 3 gal tranny fluid (flushing system including torque converter), 4' extra hose & extra clamps @ auto supply. I first mounted flange to central member with a couple screws; then bent 17-1/2" of the strap to pass the AC line ( the holes for the two bolts actually lined up to the two factory threaded holes available!!PTL). From there it's almost a done deal; hookup the cooler to the return side out of the radiator and let a half gallon at a time pump out till you get new fluid: then make up your return hose to the steel return line. It's oversize but this is FLA and it pulls. Heat is death to transmission fluid; and then the transmission! Good project.

Truck sold to friend- heard no bad report. Thanks
David H - 10/17/2017


I didn't do a proper before and after test to see if this was an improvement over the factory transmission cooler on my 1999 Chevrolet Express 3500, but it certainly looks like it would be more effective than the stock setup. Installation was easy and it fits great in front of the stock radiator.

2008 GMC Acadia

Great value for the price and free shipping, package arrived on schedule, was packed extremely well, (I would know, retired Postal mail carrier), Derale 13504 transmission cooler was exactly what was described should work well for me to tow a 3500lb travel trailer with my 2008 GMC Acadia. Will be installing the cooler this week. This definitely should keep my transmission from over heating, it's rated somewhete at 22500 GVW. My vehicle and travel trailer CGVW is approximately 9000 lbs.

The Derale 13504 has kept my transmission from over heating, have towed my travel trailer over 3600 miles no problems with transmission over heating in my 2008 Acadia SLT. Will be installing a auxiliary fan in front of my radiator to assist when in towing this summer. .
Louis L - 12/25/2018

2012 Chevrolet Suburban

The hose that came in the kit was about a foot too short and should be 3/8 id. I had to source my own longer 3/8 transmission cooler hose. Other than that, the quality of the cooler appears to be good.

GMC Yukon

Cooler worked great. Ended up needing a different sort of fitting for where it had to be installed in my Yukon, but cooler itself was fairly easy install and worked fine. Excellent customer service.


Great purchase - straightforward installation and dropped my trans temps by up to 40 degrees going over mountain passes

2011 GMC Yukon

Quality product and a great installation video on youtube by etrialer. Dropped the trans temps an avg of 30 degrees on my 11 yukon. Make sure to watch the video and order each part number listed for an easy install!

1995 Ford Van

It fit with no problem, and connecting was straight forward. We bolted it into place as the fit allowed it on our 1995 E350. The difference in transmission temp is incredible ... about 20 degrees cooler on rolling hills, and 35 degrees cooler on mountainous roads.


We have been very happy with the performance of the transmission cooler. There was a significant drop in transmission temperature after replacing the stock cooler with your product when pulling our camper. Very easy to install on our Chevy pickup.

2004 Chevrolet Avalanche

Fits and works excellent made my own brackets to fit across


The hose attachments worked perfectly. I did not think it best to use the tiewraps attachments so I made metal brackets and screwed them to frame materials. The cooler seems to work perfectly.

2014 Chevrolet Silverado 1500

The installation was not too bad. Make sure you order the correct adapter. The adapter it comes with is universal so I had to order a GM adapter after I started the installation. It mounted really clean on my 2014 Silverado. Worth the money for late model GM’S to keep the transmission heat down.

2015 Pontiac Montana

After a California to Montana trip temps ran from 10 to 15 degrees cooler than stock cooler,very happy with this product.


I bought this because the transmission temp in my 2013 Avalanche was hitting 220 when towing a boat. Which seems high. After researching I found that transmissions in those models are ok up to a maximum of 275 degrees (which seems crazy but it is rated that high from chevy. There’s a website called that has a lot of info ). I installed this product and it worked really well. Easy install with the video if you have mechanical ability. Dropped temps by about 30 degrees. Still working great no problems. Only concern I have is that the transmission temp stays pretty low in the winter. It’s working well though. I would highly recommend this product. Good products, good service!

still working great! I would highly recommend . I have had no issues and would use this product again. I am in Indiana and the trans temp can stay around 120 in the winter but I have had no issues.
Jerry S - 07/15/2021

2008 Chevrolet TrailBlazer

We've had it for a year in our 2008 TrailBlazer 2WD with 4.2L inline 6 cylinder. I think it's about the largest that would fit and we got it for a towing our 21' expandable camping trailer that can be about 4,500 lbs. max. Works great, although I added another install kit to be sure I had enough hose and the extra brackets and connection adapters. I did not want to use the mounting parts that poke through the radiator and A/C condenser fins, so I got the Derale kit with brackets and hose in an affordable kit together, part # D13006.

2009 GMC Yukon

I installed this trans cooler on my 2009 Yukon. The installation video really made it much easier. I just pulled my boat under the same conditions I had prior to the install and I am very pleased with the results. Prior to mod, my trans temp got up to 204 degrees. With cooler, it was 160-165.

1999 Chevrolet Silverado 1500

I’ve had the Timbren suspension enhancement system for a year now on my ‘99 Dodge 1500 4x4. I purchased this product because I had to tow my bumper pull three horse trailer from South Carolina to N. Central Montana. With a camper top, the bed loaded and the trailer loaded the truck sagged really bad. With the Timbrens on the sag went away completely. Making for a much safer less stressful experience while towing.


Went together easy, works as advertised. Mounted front and center for most efficient cooling capacity and it does the trick. Dropped my trans temp by 40F without a trailer. Have yet to put it to the test with a heavy trailer long distances.

2007 GMC Yukon

Installed this on my 04 denali xl. Took me about an hour. I bolted mine on instead of using the zip ties. It is the right size to fit between the grill and the condenser. Right next to the tiny factory installed cooler that doesnt get any air because of the huge gmc logo. I installed mine in line with the factory cooler. It keeps the tranny dramatically cooler when towing. It is an inexpensive tranny saver. Etrailer has a great how to video that works for almost all the 02 to 07 yukon and suburbans. Dont forget the fitting adapter that fits into the cooler.

Show More Reviews

See what our Experts say about this Derale Transmission Coolers

  • Transmission Cooler Recommendation for a 2005 Chevy Avalanche
    The Derale Cooler part # D13504 would be a great option for your 2005 Chevy Avalanche. This is a larger cooler that would do a great job keeping your transmission fluid cool while towing your 6,500 lb trailer. This cooler measures 11" Wide x 12" tall x 7/8" deep.
    view full answer...
  • Transmission Cooler Recommendation for 2005 Ford F-150 with a 5.4 Liter V8
    225 degrees is a bit hotter than I would want to see on my (or your) transmission so an additional cooler would be a great idea. Coolers are basically universal so as long as you have room for them they will fit your 2005 Ford F-150 with a 5.4 liter V8. I would go with the part # D13504 which measures 11" Wide x 12" tall x 7/8" deep and would do a great job keeping your transmission cool and prolonging it's life. You will install the cooler in line with your factory cooler so that you...
    view full answer...
  • Larger Transmission Cooler Recommendation for 2014 Ford F-150 3.5 liter Ecoboost
    For a full size truck like yours you could fit one of our bigger coolers like the part # D13504 which measures 11" wide x 12" tall x 7/8" deep. This will do an excellent job keeping your transmission fluid cool which will prolong the life of it for a long time.
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  • Recommended Transmission Cooler For 2014 Ram 1500 With 5.7 Hemi
    For your 2014 Ram 1500 5.7 Hemi, I recommend the Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets # D13504. This cooler is a confirmed fit and is 11 inches by 12 inches by 7/8 inch. It is a confirmed fit for your vehicle and is an easy installation. Unfortunately, we do not ship to Saudi Arabia unless you have an FPO or APO address.
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  • Should a Supplemental Transmission Cooler Bypass the Factory Cooler on a 1989 Nissan Pathfinder
    If coolant is leaking from any part that has to do with the transmission then you will need to have that taken care of immediately. Coolant getting into the transmission will cause it to fail and transmissions are not cheap to replace. There also seems to be some issues with the Nissan radiators because we hear about leaks often. The best solution for a leaky radiator core is to have the radiator replaced. The coolers we offer are designed as supplemental coolers and not to replace a factory...
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  • How to Find the Transmission Fluid Return Line on a Nissan Murano
    Actually, CVT transmissions can use a special fluid that can be very expensive. I would check the owners manual or with a Nissan dealer to see if it takes special fluid and how much it costs. The easiest way to determine which transmission line is the return is a simple test. Chock the wheels of the vehicle, step on the parking brake, and then start the motor. Keep your foot on the brake pedal and shift into drive for about 15 seconds. Then shift back into park and turn off the motor. Under...
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  • Adding a Supplemental Transmission Cooler or Bypassing the Factory Transmission Cooler
    The diagrams you mentioned which I have included here as well are basically showing you the path the transmission fluid will take. In the diagram on the left it showing the hot fluid line going to the radiator. On many vehicles the factory transmission cooler is inside the radiator in a separate chamber so the coolant and transmission fluid will not mix. The return line then goes from the outlet on the radiator to the supplemental cooler and then back to the transmission. In the diagram...
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    Image 1 for
  • What Makes Coolant Mix with Transmission Fluid in a Factory Transmission Cooler
    The chambers inside the radiator can end up leaking which is a problem for many Nissan owners for certain models and year ranges. It could be from metal fatigue, corrosion, or outside damage sustained in a front end impact. You should know that this occurrence is rare and the vast majority of factory coolers that are inside of the radiator never have problems.
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  • How to Determine Which Transmission Line is the Return Line on a Vehicle for Installing Cooler
    An easy way to tell which of your transmission fluid lines is the return line is to wait for the truck to be cold, then start it up and shift into drive for about 15 seconds and apply a bit of throttle with the brake firmly applied. Then put it back in park and turn off the truck. Then under the truck carefully touch the transmission lines. One will be noticeably warmer. So that makes the cooler one the return line.
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  • How Would a Transmission Cooler Install on a 1997 Dodge Durango
    Transmission cooler installs are pretty generic on vehicles. Basically you want to route the transmission fluid from the factory cooler, to the supplemental cooler, and then back to the transmission. Disconnect the return line from the transmission and using the fittings and clamps, connect it to one of the tubes on the Derale cooler. From the other tube on the Derale cooler, route the new line back to the return port on your transmission. I attached an install video that shows a cooler...
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  • How to Which Transmission Cooler Line is the Return Line on a 2001 Chevy Silverado
    You will want to run the return line from your factory cooler to the Derale Transmission Cooler # D13504. Here is an easy way to figure if the top or the bottom line is the return line. The method for determining which line is the return line is to: 1. Start engine while engine is cold 2. Put your transmission into Drive for no more than 10 seconds 3. Stop engine, remove keys 4. Identify oil return line by feeling both lines, the cooler of the two is the return line and the line you should...
    view full answer...
  • Bypassing Factory Transmission Cooler on a 2006 Nissan Pathfinder
    It is possible to install a transmission cooler and bypass the factory transmission cooler on your 2006 Nissan Pathfinder. This is not recommended by manufacturers, but it is possible. You will want to get the largest transmission cooler that will fit your vehicle. I do not know the area that you have available to install a transmission cooler, but if it will fit, I would recommend the Derale Series 8000 Plate-Fin Transmission Cooler Kit, part # D13504. The overall dimensions for this cooler...
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    Image 1 for Image 2 for
  • Which Aftermarket Transmission Cooler for 2008 Chevy Silverado with OEM Cooler
    We typically recommend using the largest available cooler that would fit into your available space. You cannot over-cool a transmission, although it might take a bit longer to warm the engine when its very cold outside. The # D13504 would be a great choice for you. I would recommend leaving the OEM transmission cooler in place. You would mount the aftermarket cooler directly behind the grille, and tap into the return line leading back to the transmission. Your OEM transmission cooler...
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  • Is Additional Transmission Fluid Needed When Installing Transmission Cooler on a 2005 Chevy Equinox
    The amount of additional fluid needed, if any, when installing a supplemental transmission cooler is going to vary from vehicle to vehicle and because not all installations are the same. Once installed all you have to do is start the engine, put the vehicle in gear for a few seconds, return to park then check for leaks. If you do not see leaks, check the fluid with the engine still running and add fluid as needed. The volume of a transmission coolers does not necessarily equal the amount...
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  • Transmission Cooler for 2010 Nissan Pathfinder with Leaking Radiator Defect
    Nissan has extended the factory warranties on radiators on 2005-2010 Frontier, Pathfinder and Xterra models. You might want to contact your Nissan dealer for details. I urge you to take this step first since it may solve your problem at little or no cost to you. If you do not want to work with your Nissan dealer you can instead purchase an aftermarket replacement radiator and have it installed by a qualified service technician. If you ever are in need of a supplementary cooler, please...
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  • Transmission Cooler Recommendation for 2006 Dodge Dakota V8
    Customers are used to Class ratings on hitches when towing a trailer so the Class ratings on the transmission coolers are meant to coincide with the Class rating of the hitch on the vehicle. It helps as a guideline for choosing a transmission cooler to fit your vehicle. The trailer hitch classes are as follows: Class I - 2,000 lbs Class II - 3,500 lbs Class III - 6,000 lbs Class IV - 12,000 lbs Class V - 12,000 lbs and higher The general rule is that transmission fluid cannot be cooled...
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    Image 1 for
  • Transmission Cooler for 2004 Chevy Express w/ 5.3L V8 Engine
    Since the best location to install the cooler is directly behind the grille, in front of the radiator and A/C condenser, you can choose the largest cooler that will fit into the available space. The # D13504 cooler you referenced would be an excellent choice if you have enough room to accommodate its 11 in wide by 12 inch long by 7/8 inch thick dimensions. The info you received from the schematic sounds correct. You can confirm by starting your cold engine, applying the brake and shifting...
    view full answer...
  • Does Transmission Cooler Core have to be Filled with Fluid Before Install on a 2007 Chevy Suburban
    When installing a transmission cooler such as # D13504, you do not have to pre-fill the cooler. Instead you will complete the installation, start the vehicle and let it run. Check for leaks during this time and maybe shift it into drive for a few seconds then put it back in park. Check the fluid level and add as needed. I have included a video link showing a typical installation for you as well as a link to an FAQ article on transmission coolers.
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  • Way to Find the Transmission Cooler Return Line for Installing a Supplemental Transmission Cooler
    The most reliable method for determining the return line from a factory transmission cooler to install a supplemental cooler is to start your 2007 Chevy Silverado 1500 when cold and put it in drive for 10 seconds, put the vehicle back in park and then shut the engine off. Now feel both transmission lines, the one that is cooler is the return line and the one to use. I attached an FAQ on transmission coolers for you to check out.
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  • How to Determine Which is the Transmission Cooler Return Line in 2003 Ford Explorer
    The method for determining which line is the return line is to: 1. Start engine while engine is cold 2. Put your transmission into Drive for no more than 10-15 seconds 3. Stop engine, remove keys 4. Identify oil return line by feeling both lines, the cooler of the two is the return line Sometimes the transmission itself will have markings to indicate the function of each connected line.
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  • Can Derale Transmission Cooler # D1350405 Bypass 2005 Nissan Pathfinder Radiator
    The Derale Series Plate-Fin Transmission Cooler, part # D13504, is designed to be used as a supplement to your cooling system and not meant to be used as a replacement for the OEM system you have on your 2005 Nissan Pathfinder. This cooler features furnace-brazed aluminum construction and 3/4 inch wide turbulator plates. This cooler measures 11 inches wide by 12 inches tall by 7/8 inches deep. This also includes the complete mounting kit. I have linked you to a product review video for...
    view full answer...
  • Are Special Fittings Needed to Install a Transmission Cooler on 1996 Dodge Ram 2500 Cummins 5.9L I6
    For your 1996 Dodge Ram 2500 with 5.9 Liter I6 Cummins diesel, you will not need any additional fittings to install transmission cooler # D13504. The cooler comes with the Insta-dapt radiator adapter and no other special fittings are needed. I have included a link to the installation details and a link to our informational article on transmission coolers for you.
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  • Towing Capacity of a 1993 GMC Sierra 3500 Diesel and Do I Need a Transmission Cooler
    There are a couple of ways to obtain the maximum towing limits for your 1993 GMC 3500 Diesel. Towing information can typically be located in your owner's manual or by contacting a GM dealer and providing them with your VIN. You can also locate the GCWR found on a plate or sticker fixed to the door jamb of the driver's door of your vehicle. The gross combined weight rating (GCWR) is the maximum weight allowed for the truck, trailer, and all contents combined. When determining whether...
    view full answer...
  • Recommendations for Preventing a 1999 Ford F250 Powerstroke Transmission from Overheating
    Fluid coming out of the transmission dipstick tube is usually a sign of severe overheating. A transmission cooler will help a ton to prevent this from happening again, but you might take your truck to a transmission shop to make sure you didn't damage anything in your transmission as heat is the number one killer of transmissions. For your truck the most popular upgrade for a transmission cooler is to go to the 6.0 liter generation Powerstroke's transmission cooler. I wish we carried an...
    view full answer...

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