Mishimoto Silicone Coolant Hose Kit; Black (01-05 6.6L Duramax Silverado 2500 HD)Find parts that fit my vehicle

Transmission cooler

This is a quality unit. I am very pleased with the kit. It keeps the trans temperature down. It was overall pretty simple to install and the kit came with pretty much everything it needed to install. The only complaint I would have is 1 of the cooler hoses could have been a pre bent hose to prevent kincking other than that better instructions provided would've been nice as well. The company says it takes about 2 hours and I had it done in about 1 1/2 hours taking my time

Great product!!

This is a great product. Well made good tolerances for easy installation. Quality and it shows in the price.

Awesome Quality!

This cooler is solid. I have not installed it yet. I will report results but I expect it will perform very well.

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Perfection

I was a little worried about spending this much for a radiator but could not be happier with it from the packaging and shipping to install they take pride in their work and it shows still waiting to start the truck up but is installed and holding fluids

Great product

Easy to install. Keeps transmission temp at 140-160 even under heavy load

Good Buy

Took just a bit over an hour, only due to hose clamps on the hot side not being properly aligned. Spent a good 30 minutes fighting terrible angles to access those hose clamps. Do yourself a favor and align all hose clamps on every car you own, so it's conducive to easier work. And then tell all your friends and neighbors to do the same. This unit is substantially larger than the stock one, and the cooler temps absolutely reflect it. I am not tuned, and as to be expected no "noticeable" whp gains were made. However, I AM maintaining boost FAR better. Heatsoak is practically non-existent, and I am consistently making 17psi through 5+ pulls even after an hour of driving, which is certainly the major benefit! I will update after a tune if any improvements were made.

Perfect Fit

Just pure quality and fits perfectly just be aware that for some reason as someone else posted the bottom hose to radiator is just too hard to get on so I had to use my old Oring to get it to fit. Instructions would have been nice. I would also order the dorman y-pipe and thermostat housing as I did.

Worth the miney

With the typical 68RFE issues I like to keep my trans mission cool. This cooler made a BIG difference in cool down speed after stop go traffic as well as overall cooling. Definitely recommend over the factory cooler

Trans Cooler

Big improvement. Reduced transmission temperature about 15-20 degrees when towing travel trailer.