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Revmax Transmission Cooler Thermostatic Bypass Upgrade For 2013-2018 Dodge Ram 6.7L Cummins Diesel 68RFE

4.8 (8) Write Review
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$109.00

$ 44 .99 $44.99

In Stock
  • You cannot properly flush your cooler lines without the aid of a hot flush machine that can get hot enough to open the bypass valve up; With our bypass upgrade you can use room temperature fluid to clean out your cooler at anytime you wish without any special tools!
  • There is no longer a thermal controlled bypass valve which can fail and cause lack of cooler flow and complete transmission destruction
  • Instead of closing off cooler flow when the transmission is cold and making your transmission generate unneeded heat that is hard to shed later; our bypass allows your cooler to immediately begin cooling your transmission and not waiting for it to get hot, just to try to cool it later
  • Integral aluminum cooling fins aid in passive cooling of the block and fluid



Gary Mullins
Reviewed in the United States on February 12, 2025
Did what it was supposed to do!! rev Max top product
DM3
Reviewed in the United States on August 15, 2024
Works great!
Michael Pilcher
Reviewed in the United States on October 3, 2024
I installed this on my 2017 Ram 3500 years ago and it took my 68rfe trans temp from 170’s and 180’s down to 120’ and 130’s. Life of these transmissions is keeping them cooler, especially in the heat of summer. This bypass also will never fail because there is no thermostat in it like there is in the factory one.
Andy Surber
Reviewed in the United States on April 30, 2024
This bypass worked great for me. The only negative is the o-rings that are provided are hard to install. Note they go on the forward side flex lines, not the hard lines. It would be helpful if Revmax would include replacement o-rings for the hard lines. I re-used mine and got luck with no leaks. Combined with a new oversize oil pan, this lowered my temps from 195F to 140F.
Anna Rogers
Reviewed in the United States on September 17, 2023
Highly recommend! Our truck transmission temp started running 230°+ after 30 mins of driving with no load. So we started researching and bought the above product. Install was fairly easy. Instructions suck though. We did need to watch a video for the connection points. Turns out you can remove the threaded ends on your lines to utilize the quick connectors on the RevMax. Once we figured that out it was a piece of cake.This morning (next day) we are hauling our 30 ft camper and the temp is staying low! Highly recommend!
Customer
Reviewed in the United States on June 25, 2023
Stock valves are known to go bad and cost you a transmission. Good insurance for the price. Pair with a better transmission pan, and Temps are about 20 degrees less than before. I drained pan, did both filters and drained the lines to the cooler aswell. Took 16.5 quarts to fill back up.
Kona-Sean
Reviewed in the United States on May 26, 2023
Parts similar to this always come with the (internal) o-rings installed. However, these are not, so you have to do it yourself. It is quite a task to set these o-rings in place. Hence, it doesn’t come installed? And, to make matters worse, it leaked. I used the provided o-rings, then I tried 2 other sets to no avail. It was either too tight or too lose & leaked. Also, the kit comes with 4 o-rings, none of which fit the compression fitting side. Note to the seller; you should have these o-rings preinstalled to prevent user error & returns. I am returning and trying another brand. Hopefully it’s not from the same overseas supplier.
Joe
Reviewed in the United States on October 13, 2022
Install took about 1/2 hour in my driveway under the truck (no lift needed). Took longer to get the "O" rings in the little grooves than to do the actual install. Replaced 3.5 quarts of trans fluid. Warmest I have seen the trans since install of the revmax bypass has been 145º @ 87º ambient. would normally run 168 - 170 without the bypass. Money well spent.