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Transmission Cooler

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Transmission Coolers

Preserve the life of your transmission and improve towing performance with a transmission cooler. Protect your vehicle's warranty or simply give your vehicle a boost with a simple to use addition to any towing set up. Push on fittings and three mounting positions ensure a hassle-free installation, while varying performance levels allow you to match the transmission cooler to your specific towing needs.

Find the correct fit for your vehicle by entering the year, make and model to the left. We offer fits for most popular vehicles, including Ford, Chevy, Dodge, GMC, Honda, and Toyota.




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Vehicle Transmission Coolers

Enter the year, make and model of your vehicle above to find custom fit transmission coolers. You can also browse the different types of coolers, parts and accessories available below.


Vehicle Coolers and Parts





Transmission Coolers Videos

Derale Transmission Coolers D13107 Review

Today we're going to take a look at the Derale Series 7000 Transmission Cooler Kit with the hose barb inlets and a class three rating. This cooler will improve the functioning and overall performance of your transmission. It extends the life of the transmission, and it will prolong periods between necessary fluid changes. It does cut down on heat related failures. Inside the tubings on this has built in turbulators that will agitate the fluid and give you more efficient cooling. It is designed with copper tubing expanded into the aluminum fins for maximum heat transfer. Basically, the copper tubing is your best material for conducting the heat out of the fluid, while the aluminum is ideal for transferring and dissipating that heat. It is protected from possible damage during installation by these plastic fin guards right here that keep you from damaging the fins when installing it, and it has a nice powder coat finish over the whole cooler.


Flex-a-lite Transmission Coolers FLX45951 Review

Today, we're going to take a look at the Flex-a-lite Shrouded Heavy-Duty Remote Oil Cooler and Electric Fan, has a Class 5 rating. Now, this Flex-a-lite Shrouded Remote Mount Oil Cooler will provide transmission or engine oil cooling when there is enough space to mount a cooler on the radiator. It's used when the engine is prone to overheating from towing, operating the vehicle in high climates, high speeds or slow speed off-roading. The shrouded version, shrouded fan version here, is for increased airflow, has a built-in electronic thermostat right here. The 1P shroud acts as a wind tunnel, helps center the air flow over the radiator core. The adjustable thermostat right here starts the fan at a specified temperature, usually between 180 or 240 degrees, and because of that, it'll save energy by only running the fan when needed, and it allows the engine to quickly warm up, because the fan does not engage until the set temperature is reached. The brass, or the copper tubing on this is a 5/8" diameter copper tubing.


Flex-a-lite Transmission Coolers FLX45901 Review

Today we're going to take a look at the Flex-a-lite heavy duty remote oil cooler and electric fan, has a class 5 rating. This Flex-a-lite remote mount oil cooler will provide transmission or engine oil cooling when there isn't enough space to mount a cooler on the radiator. It is used when the engine is prone to over-heating from towing, operating a vehicle in any hot climates, high speeds, or slow speed offroading. It does use the 5/8" diameter copper tubing in it. What's unique about this cooler is inside the tubing, they use a design called a high twist turbulator design. What that does is it allows the fluid, as it's flowing through it, to actually twist and that helps improve the heat transfer.


Flex-a-lite Transmission Coolers FLX4126-6V Review

Today, we're going to take a look at the Flex-a-Lite Translife Transmission Oil Cooler and Cooler Guard Kit. This cooler has the -6 AN fittings and a Class 5 rating. This kit will include both the cooler and the cooler guard. The cooler we'll start with is a Translife transmission cooler. It provides additional cooling to protect your automatic transmission. It is designed to mount in front of your radiator or your air conditioning condenser. Now, cooler transmission oil will give you more reliable consistent shifts and it prevents any transmission damage that could happen under extreme towing conditions.


Flex-a-lite Transmission Coolers FLX41124RV Review

Today we're going to take a look at the Flex-A-Lite Direct Fit Transmission Oil Cooler with the Cooler Guard. This has the three eighths inch barbed fitting with the J-return and Class I rating. This kit is the transmission cooler and the cooler guard. It is designed to fit most 2003 to 2007 Ford Six Liter Super Duty Diesels. This is designed to work with the Flex-A-Lite radiator, part number FLX59074. We do sell that separately on our website, and the Flex-A-Lite Radiator Fan Combo, part number FLX59274.


Flex-a-lite Transmission Coolers FLX4116-6V Review

Today we are going to take a look at the Flex-a-lite Translife transmission oil cooler and cooler guard kit. This cooler has the -6 am settings and a class 2 rating. This kit will include both the cooler and the cooler guard, and the hardware. This Translife transmission cooler will provide additional cooling to protect your automatic transmission. It is designed to mount in front of your radiator or your air conditioning condenser. Cooler transmission oil gives you more reliable, consistent shifts, and it prevents transmission damage that could happen under extreme towing conditions.


Flex-a-lite Transmission Coolers FLX4116-6 Review

Today we're going to take a look at the Flex-a-Lite Translife Transmission Oil Cooler. This has the -6 AN fittings and a class two rating. This Translife Transmission Cooler Kit will provide additional cooling to protect your automatic transmission. It is designed to mount in front of your radiator or your AC condenser. Now cooler transmission oil will give you more reliable, consistent shifts, and it prevents any transmission damage that might happen under extreme towing conditions. This kit includes everything shown here on the table: the transmission cooler itself, all the mounting hardware, and then a nice set of detailed installation instructions on how to install this to your vehicle. Now on this cooler the tubing is a half inch diameter brass tube. What's unique about this cooler is on the inside of the tube, they actually use a high-twist turbulator design.


Flex-a-lite Transmission Coolers FLX4126-6 Review

Today we're going to take a look at the Flex-a-Lite Translife Transmission Oil Cooler. This one has the minus six AN fittings, and a class five rating. Now this Translife Transmission Cooler kit will provide additional cooling to protect your automatic transmission. It's designed to mount in front of your radiator or your air conditioning condenser. Now cooler transmission oil will give you more reliable consistent shifts, and it prevents transmission damage under extreme towing conditions. This kit includes everything shown here.


Flex-a-lite Transmission Coolers FLX45261V Review

Today we're going to take a look at the Flex-a-lite Heavy Duty Engine Oil or Transmission Oil Cooler with the Cooler Guard. This cooler has the 1/2-inch NPT female fittings on the end and it's a Class 5 rated cooler. This kit is the oil cooler with the cooler guard all included. The heavy duty oil cooler can be used for engine oil cooling or transmission oil cooling. Your engine will function as best when your engine oil is between 180 to 200 degrees, and engine oil will act as a coolant as well as a lubricant. If your oil gets too hot, your horsepower will drop, varnish forms inside the engine, and your oil starts to break down, so using a heavy duty oil cooler like this one in a towing application will give you longer life to the engine and the engine components by keeping that oil from overheating. This also can be used as a heavy duty transmission oil cooler, and because you're automatic transmission will work harder when you tow, it can also get hotter and heat, again, is one of the major enemies of your transmission.


Articles about Transmission Coolers



Transmission Coolers Questions and Answers

  • 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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  • Comparison of Plate and Fin Style Transmission Coolers and Tube and Fin Style Transmission Coolers
  • The difference between the plate and fin style, # D13504, and the tube and fin style cooler, # D12904, is that the plate and fin models can cool better than the tube and fin models. You will notice that plate and fin coolers with the same rating as tube and fin coolers are smaller in size. Basically, the plate and fin cooler provides more surface area to extract heat from the transmission oil and also has internal turbulator technology to help the oil to cool faster and prevent pressure...
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  • Installing Derale Transmission Cooler to Replace OEM Cooler on 2007 Nissan Frontier SE
  • The Derale transmission coolers we sell are designed more as a supplemental cooler that is meant to augment the factory transmission cooler portion of the radiator, not replace it entirely. If you are experiencing the common problem with the radiator leaking causing the engine coolant contaminating the transmission fluid, your best bet really would be to have the original radiator replaced. I did a Google search using the keywords Nissan Radiator Problem and found that Nissan has extended...
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  • Which Transmission Cooler is Recommended for a Nissan Frontier with 6,500 Pound Towing Capacity
  • The best way to decide which class cooler you need is to take a look at what you will be towing and where. If you will be towing a light load, less than 2,000 pounds, in flat driving conditions, your vehicle will do fine with a Class I. If you will be towing 6,000 pound load through some hills, I would use the Class III cooler. I prefer the 8000 and 9000 series. They are built a little heavier and are more resilient. The 7000 series are built a little lighter and can be damaged more...
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  • Transmission Cooler Recommendation for a 2007 Chevy Silverado 4x4 with Tow Package and 5.3 Liter
  • The ideal operating temperature for the transmission and fluid is between 160 and 200 degrees Fahrenheit. Transmission fluid cannot be overcooled, so adding an aftermarket cooler would be a good idea as factory coolers can be inadequate for towing applications. The Derale Transmission Cooler, # D13502, is one of the recommended coolers for the 2007 Chevy Silverado with the 5.3 liter engine. Since you are towing upwards of 9,000 pounds, I would recommend a higher capacity cooler like...
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  • Transmission Cooler Recommendation for a 2013 Chevy Silverado 1500
  • All vehicles with an automatic transmission have a factory transmission cooler. Normally it is located inside the radiator but it can also be outside of the radiator. Trucks that have a tow package often have a larger cooler that is outside of the radiator. Regardless of where your factory cooler is located, you can still add a supplemental cooler because transmission fluid cannot be over cooled. You are correct about towing in warmer weather and in the mountains. It will increase the...
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  • What is the Towing Capacity of a 2004 GMC Sierra 1500 4x4 with 5.3 Liter Motor
  • For a 2004 GMC Sierra 1500 4x4 with the 5.3 liter the towing capacity will be one of the following depending on how your truck is configured: Regular Cab, Long Bed 3.73 rear end, 8,000 4.10 rear end, 9,000 Crew Cab, Long Bed 3.73 rear end, 7,500 pounds 4.10 rear end, 8,500 pounds Extended Cab, Long Bed 3.73 rear end, 7,600 pounds 4.10 rear end, 8,600 pounds Regular Cab, Short Bed 3.73 rear end, 8,200 pounds 4.10 rear end, 9,200 pounds Extended Cab, Short Bed 3.73...
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  • Recommendation For Transmission Cooler on 2008 Chevrolet Silverado 1500 LS With 4.8 Liter V8
  • Ideally you want to keep the temperature of the transmission fluid in the 160 to 200 degree range. You cannot cool transmission fluid too much. Transmission coolers are universal fit items so you will want to measure the space you have in front of your air conditioning condenser or your radiator to see what size cooler will fit your 2008 Chevrolet Silverado 1500. Installing an additional transmission cooler in-line with the current transmission cooler would help in cooling the transmission...
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  • Location of Transmission Lines on a 2001 Ford Ranger For addition of a Transmission Cooler
  • One of my co-workers here happens to have a 2001 Ford Ranger with 4.0 Liter engine and automatic transmission, so I went out and checked under the hood. The transmission lines are located at the drivers side radiator tank, see photo, and run down, then across to the passengers side before turning back and running to the transmission. You should check your vehicle because different vehicle accessories or packages and the engine size and drive train may affect the location of the transmission...
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  • How to Determine Which Transmission Line is the Return Line for Installing a Transmission Cooler
  • The method we use to determine the correct line to install a transmission cooler on is pretty simple. You want to install the cooler on the return line. To determine which line is the return line you will want to start with your truck totally cooled off. Start the truck and put it in drive, apply the brakes firmly and then apply the accelerator slightly so that the rpms climb. Put the truck back in park and shut it off. Now go out and feel the two lines leaving the radiator. The cooler...
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  • Transmission Cooler Recommendations for a 2005 Chevrolet Silverado 2500 HD 6.0L
  • When it comes to installing an aftermarket transmission cooler you will want to choose the largest and highest rated transmission cooler that will fit on your 2005 Chevrolet Silverado 2500 HD 6.0L because transmission fluid cannot be over cooled. Aftermarket transmission coolers are supplemental coolers and are designed to be install in-line with your factory transmission coolers return line. Transmission coolers with fans like the Derale 16-Pass Electra-Cool Remote Transmission Cooler...
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  • Why are Transmission Coolers Installed on the Fluid Return Line After the Radiator Mounted Cooler
  • The biggest reason that transmission cooler manufacturers and vehicle manufacturers want transmission coolers installed after the factory cooler rather than before it is because the transmission cooler in the radiator is surrounded by the coolant in the radiator. The transmission fluid leaving the radiator mounted cooler can be cooled further by the aftermarket transmission cooler. Installation before the OEM radiator mounted transmission fluid cooler would negate most or all of the...
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  • Transmission Cooler Recommendations for a 2002 F-350 with the 7.3L Diesel
  • Transmission fluid should run below 200 degrees Fahrenheit. At 240 degrees you definitely need to make some sort of change to reduce the temperature. I would first recommend having the transmission checked by a qualified automotive technician to be sure it is performing properly. This will assure you that no damage has been caused to the transmission and you will not be stranded. Installing a transmission cooler will not reverse any damage that may have already been caused. If you find...
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  • Transmission Cooler Recommendation for a 2011 Chevy Silverado with 5.3 Liter Engine
  • The optimum temperature for transmission fluid is between 160 and 200 degrees Fahrenheit (70 to 93 degrees Celsius) so at 240 (116 Celsius) you were definitely above that range. When towing up a high at low speeds using a low gear or towing mode, if available, would be the correct way to go about towing the trailer. I would recommend adding a transmission cooler to your 2010 Chevy Silverado. I would use a class III or higher cooler rated for at least 6,000 pounds. You can use # D13503...
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  • Will the Transmission Cooler Snap-In Radiator Adapter Fitting Leak Transmission Fluid
  • If the Snap-In fitting, item # D13035, or the OEM transmission line snap fitting is removed from the radiator on your 2006 Chevrolet Silverado, you will leak some transmission fluid that will need to be replaced. You will not leak any anti-freeze because the fluids are not mixed. The anti-freeze coolant is circulated around the outside of a small transmission cooler that is installed in the radiator tank. If your snap fitting is leaking before the installation of the transmission cooler,...
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  • Tow Capacity of 4x4 2007 Chevy Silverado Classic with 5.3L and Transmission Cooler Recommendation
  • You will want to first consult your vehicle owners manual but based on my research your truck has a standard towing capacity of 7,500 pounds and max towing capacity of 10,500 pounds. The max is usually either with the truck properly equipped or when using weight distribution. Your owners manual should be able to shed some light on this. Even with the truck properly equipped, and/or using weight distribution you will still be near the maximum of the truck. If a more capable truck is...
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  • Is a Transmission Cooler Needed for Towing with a 2013 Nissan Altima 2.5 Liter And CVT Transmission
  • Installation of a Transmission cooler, like the Derale Series 8000 Plate-Fin Transmission Cooler # D13503, to cool the constant variable transmission fluid in the transmission on your 2013 Nissan Altima would be a good choice if you will be towing with your vehicle and your vehicle has transmission fluid lines that run to an OEM cooler at the front of the vehicle. These lines could go to a tank mounted cooler in the radiator or to an external cooler in front of the radiator. If your transmission...
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  • What is Correct Placement of Derale Dual-Pass Heat Sink Transmission Cooler # D13265
  • Maximum air flow will increase the heat exchange performance of any oil or transmission fluid cooler. This is true for flat plate-fin and tube-fin type coolers that typically mount in front of the air conditioning condenser as well as for heat-sink-type coolers intended for mounting on the frame rail. If mounted in a location that does not provide maximum air flow the cooler will still help to reduce the fluid temperature to some extent but it will not function at its best. If you prefer...
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  • Transmission Cooler Recommendation for a 2009 Chevy Silverado 1500 Crew Cab with 4.8 Liter Engine
  • The ideal operating temperature for transmission fluid is between 160 to 200 degrees. Your 2009 Chevy Silverado does have a factory transmission cooler, but factory coolers are often inadequate for towing. Since your fluid is reaching 250 degrees, you would benefit greatly from a transmission cooler. For your 2009 Chevy Silverado 1500 with the 4.8 liter engine, I recommend the Derale Transmission Cooler, # D13503. This is a class III cooler rated for up to 6,000 pounds gross trailer...
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  • How To Find the Transmission Cooler Return Line From Radiator on a 1993 Chevy C2500
  • The best way to determine which line on a transmission cooler is the return line from the radiator is to use the following procedure: 1. Start engine while engine is cold 2. Place transmission shift lever in drive for no more than 10 seconds 3. Place in Park, stop engine, and remove keys 4. Identify the oil return line by feeling both oil lines. The coolest line is the oil return line. On the aftermarket transmission cooler the ports are not input specific or output specific. It...
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