How to Install a Transmission Cooler

1. Begin by purchasing a transmission cooler kit from the parts store or online. Be sure to get one that is specifically designed for your vehicle’s make and model. 2. Mount the cooler in an area of the engine bay where it won’t be exposed to too much heat, such as behind a radiator fan or between two fenders.

Use any necessary mounting hardware that came with the kit, making sure everything is tight and secure before proceeding further. 3. Locate the transmission lines running from your car’s radiator to its transmission fluid reservoir and disconnect them using a wrench or socket set if necessary; use appropriate safety precautions when working around potentially hot components like these and avoid spilling any fluid onto yourself or areas near you while doing so. 4. Carefully attach each disconnected line to the corresponding ports on both sides of your new cooling unit, making sure they are properly connected by double-checking their orientation against diagrams provided in the installation instructions (if applicable).

5 .

  • Gather the necessary materials for installation – transmission cooler kit, wrench, hose clamps and extra coolant (if needed)
  • Locate a suitable mounting location for the cooler – this should be close to the radiator but away from any moving or hot parts of the engine
  • Make sure there is enough space around it to attach hoses
  • Mount the transmission cooler in place with bolts that come with it or use other hardware if required
  • Tighten all screws securely so that it does not move during operation
  • Connect one end of each hose to either side of the transmission cooler using hose clamps provided in most kits (or buy them separately)
  • Make sure they are tight and secure before connecting them to their respective connections on the vehicle’s cooling system components (radiator, water pump etc
  • It may be necessary to drain some fluid out from these locations first depending on how much clearance is available between them and your new transmission cooler setup
  • 5
  • If you have an external oil filter installed , make sure it is also connected correctly as per manufacturer’s instructions
  • This will help ensure optimal performance from your newly installed unit as well as keep debris away from important engine components
  • 6
  • Fill up both sides of the transmission cooling loop with coolant or other fluids specified by manufacturer’s instructions until full then start up your car and check for any leaks at all fittings including those around hoses, clamps , lines etc
  • Once satisfied there are no leaks present , shut down car and allow time for everything to cool before taking a test drive!

The ‘Right’ Way To Install a Transmission Cooler

How Much Does It Cost to Have a Transmission Cooler Installed?

The cost of having a transmission cooler installed will depend on several factors, including the type of vehicle, the type of transmission cooler being installed and the amount of labor required. Generally speaking, you can expect to pay anywhere from $75 to $500 for installation depending on these variables. It’s important to remember that there may also be additional costs associated with installation such as fluid changes and new hoses or fittings if those are necessary.

Be sure to talk to your mechanic about any additional parts or services they might need in order to properly install your transmission cooler.

Where is the Best Place to Put a Transmission Cooler?

The best place to put a transmission cooler is in front of the radiator, so that it can get maximum airflow from the fan. This will ensure that your transmission fluid stays cool and within its optimal temperature range. Additionally, if you are installing an additional electric cooling fan for your transmission cooler, it should be placed as close to the transmission cooler as possible, while still allowing enough air flow through the radiator to keep it efficient.

Does It Matter Which Line Goes Where on a Transmission Cooler?

Yes, it does matter which line goes where on a transmission cooler. The inlet line from the transmission should be connected to the side of the cooler with higher pressure and/or temperature. This will ensure that hot fluid is entering the cooler at its highest possible point for maximum cooling efficiency.

The outlet line should then be connected to the opposite side of the cooler, as this is where any cooled fluid will exit after passing through. It’s important to always use high quality fittings when connecting lines to your transmission coolers, so make sure you double check before making connections!

Should Transmission Cooler Be before Or After Radiator?

The answer to this question depends on the individual setup of your vehicle. Generally speaking, it is best practice to place a transmission cooler before the radiator, as this will help keep the transmission fluid from overheating due to heat absorption from the radiator. However, if you are using an auxiliary cooling fan in conjunction with your radiator and transmission cooler, then it may be beneficial to install the transmission cooler after the radiator so that any additional airflow created by the fan can help cool both components more efficiently.

Ultimately, determining where you should locate your transmission cooler comes down to personal preference and how well-suited each installation option is for your specific application.

How to Install a Transmission Cooler


How to Install a Transmission Cooler on a Chevy Silverado

Installing a transmission cooler on your Chevy Silverado is an easy job that anyone can do with the right tools and some patience. You will need a wrench, screwdriver, drill bit, and fittings to complete the installation. First, find a place to mount the cooler where it won’t interfere with other engine parts.

Then use the drill bit to make holes for mounting screws in both ends of the mounting bracket. Next attach the hose clamps onto each end of the transmission line and secure them with nuts before connecting them to their respective fittings on either side of the transmission cooler. Finally, thread all bolts into place and tighten securely before taking your truck out for a test drive!

Transmission Cooler Mounting Position

The mounting position of a transmission cooler is an important factor that can affect the performance and longevity of the transmission system. It should be mounted in such a way that it receives adequate airflow to keep temperatures low. Ideally, it should be mounted horizontally near the front grill or radiator where there is plenty of air flow.

Additionally, some aftermarket kits may require additional brackets for secure mounting if you are not using the stock location for installation.

External Transmission Cooler Vs Radiator

Adding an external transmission cooler to your vehicle is a great way to improve its performance and extend the life of its components. An external transmission cooler is a device that cools the fluid in an automatic transmission, separate from the vehicle’s radiator. It works by dissipating heat more efficiently than what can be achieved through a traditional radiator system, which helps reduce wear on internal components and ensures smoother shifts.

In comparison to a radiator, an external transmission cooler allows for much greater cooling power as it has larger fins with more surface area for improved efficiency.


Installing a transmission cooler is an easy DIY job that can help extend the life of your vehicle’s transmission. With just a few basic tools, you can have your transmission cooler up and running in no time. Not only will it prevent overheating, but it may even improve fuel economy as well.

Whether you are replacing an old one or putting in a new unit from scratch, installing a transmission cooler is an excellent way to ensure the longevity of your car or truck’s transmission system for years to come.


  • Alex Gearhart

    Alex Gearhart, an automotive expert specializing in transmissions, has over a decade of hands-on industry experience. With extensive knowledge in manual and automatic systems, Alex is passionate about educating car enthusiasts on vehicle maintenance. As the chief author at, Alex simplifies complex concepts for readers, helping them make informed decisions about their vehicles. Outside of work, Alex enjoys road trips, restoring classic cars, and exploring new automotive technologies.

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