ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins

I installed the ATS Bypass as part of my filter and fluid change, so it took much longer than the instructions led, I also used 11 qts of ATF+ due to additional drainage and refill. Some of this refill was after every drive cycle I would check the ATF level to find it down another qt. for about three cycles. Within a week of the install we left on our semi annual trip to Montana via Kansas, South Dakota, North Dakota, returning home via Wyoming, Nebraska, Iowa and a side trip to Missouri. Approximately 5K miles. No leaks, at any junction. Maximum ATF temp of 188 degrees F. with normal around 145. No transmission specialist that I have ever talked to in my 70 years has said "the more heat the better" refering to ATF temps. Good product.

Great part! It was easy to install and fit perfectly. It gives me peace of mind knowing it’s installed and working as intended. Highly recommend!

Easy straight forward install. Transmission temperature before installation 169 degrees during non towing and 132 degrees after installation non towing Quality product well engineered