This is a must upgrade since many tundra’s and sequoias din not come with one from the factory. We use our TRD sport Sequoia for family vacations and my wife’s daily driver as she shuttles the kiddos around town. With 35” wheels an ARB bumper and other upgrades I wanted an external cooler for the transmission. Genuine cooling systems made it possible. With a larger 15 row Setrab cooler and custom bracket and factory hardware. It’s an no brainer to purchase there unit. I am very satisfied with the kit I have recommended it to all without one.

We just ordered and installed this kit on a customers 19 Tundra. Everything was labeled well, instructions were very clear, quality of parts is top tier. I really like that it used OEM Toyota Parts.

I was hesitant, considered sourcing the parts myself. ultimately i realized my time is worth more, so spending the money on this product turned out to be the best option. everything works as advertised. Definitely a high quality product and very simple to install

Driving same 3 hour moutain route before and after kit gave 15-40f deltas. (With trans thermostat pinned open.)

Tundra torque converter just locks in heat by design. Red lights, slow crawls, and third gear towing just cause heat spikes. This does not change that but gives you a lot more headroom before your fluid starts burning.

260f+ towing spikes. 245 red lights. And 8k miles after a flush the trans fluid was very dark again was enough to convince me to pay for kit. Worth every penny.

Toyota dealer and local shop both quoted me 2-3 hours for job. 500$ for professional install in 2024.

Excellent packaging, simple process to install.

Transmission temp now staying below 200F while commuting over mountain passes.

The parts I received from Genuine cooling
Systems was complete. Since being installed on my 2020 tundra it keeps the
Truck operating 12 degrees cooler.
Thanks for a great product.

Watched the YouTube video of the install and just followed along. Time consuming but everything fit perfectly.

Great kit

All the hardware in the kit are top notch, they are either factory Toyota parts or high quality aftermarkets pieces. As far as installation goes, it would be nice for more comprehensive installation instructions. I watched video's on YouTube for content. One key is to install the hoses on the thermostat before installing onto transmsiion, you will not be sorry...

This is a great product. Most of the parts are OEM, which is why I purchased this kit. Has lowered my transmission temperature by about 25 degrees. Definitely recommend

Installed in my 2019 because I wasn’t comfortable with not having an external cooler for towing our camper. I had the Toyota dealership near me do the install and they were awesome. Highly recommend this kit!

Worth every penny. My brothers 2019 Tundra is carrying a lot of weight from the lift, armor, front bumper, 35” tires. His transmission temps were always between 220-240 degrees F. Now the temps average between 170-190 degrees F. The kit took us about 4 hours to install. It was straight forward, but we took our time. This is a high quality kit and a good investment to protect the transmission.

Install took some time, but was not overly complicated. Looks great, and keeps my temps down.

Had a local shop install the transmission cooler kit. They said it was a very well put together and well built kit. They were thoroughly impressed with the quality of the kit and how easy it was to install. I would recommend this kit to anybody with a Toyota that didn’t come with a factory installed transmission cooler kit.

The kit itself was awesome but the instructions were missing on how to mount the radiator properly. Figured it out and it works great. Also got no instructions on the codes for the OBD reader. Great kit but more details would have been helpful and saved time.

the kit has good quality and its easy to install

I have a 2019 Tundra pro.
I had the dealer install it. They told me it was a really nice kit . Now I feel mutch more comfortable towing with my tundra.

Don't Heasatate to buy this kit , you will not be disappointed. Also any questions or problems they get back to you right away .

You will not go wrong !!!!

Great cooler does exactly what it’s supposed to my transmission didn’t go over 190 degrees since I installed it

I installed the kit this pat weekend, overall is is a nice kit, but the cooler bracket was either missing a backing plate bracket for the lower portion or the fender washers are way to small. I needed to manufacture a backing plate to mount the lower portion. Overall, the system seems to work as advertised and my tranny temps are below 200 degrees. The test will be in summer when I start pulling my travel trailer around the Colorado mountains.

an absolute must if you are towing regularly, on your 19-21 Tundra. I cannot understand why Toyota deleted the Trans oil-cooler for these years. Nothing mechanical changed and the result is much higher temps on a consistent basis. I tow 8400 lb. trailer 60% of the miles on my 2021. This system shaves 20 to 30 degrees off the fluid temp, compared to the stock configuration. This kit uses stock parts, from previous 18 and older Gen 2 Tundras. Very Quality System. Absolutely recommended.

Very satisfied with the cooler. Most components are OEM toyota and the parts that are aftermarket exceed my expectations. Overall a very good kit if you do not have the factory transmission cooler. Transmission temperatures very rarely go over 200 degrees and when they do, they come down rapidly after a heavy tow up a grade. Before cooler my fluid was reaching 250 plus.. That will break down the fluid and if not changed frequently and will shorten the life of the transmission.

Kit was complete and well packaged for shipment. Installed in about two hours, taking my time. I elected to install an inline magna fine filter, and pin my thermostat open. Works great, and keeps everything cool.

bought this product just over a year ago. Works as promised. Temps stays under 200 not over 200 before the kit. No issues. Had a transmission shop put it in. Only thing but doesn't affect the performance is that it doesn't sit straight up and down, it is on a slight angle. Apparently the place where you mount it doesn't line up. They spent at least 2 hours and it was either go with the slight angle or drill unnecessarily into the truck. The owner said it won't affect performance. So far no complications with that. So I wouldn't let this discourage anyone planning to buy. Its worth the investment. Even the mechanics said this was a good thing to invest in.

Just finished my first trip towing my travel trailer since installing the kit. Torque and pan temps
stayed within a few degrees of each other the entire trip. I am so glad I don’t have to worry about the trans temps anymore. Thanks for making this kit.

Works great and keeps the tranny temp down.