I Tested the ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins: My 2019 Results
If you own a 2013-current 6.7L Cummins, you already know how much attention this engine deserves when it comes to reliability, temperature control, and long-term performance. I’ve found that one of the most talked-about upgrades in this area is the ATS Thermal Bypass Valve upgrade for the 2019 model year and beyond, especially for drivers who want to improve transmission behavior and support their truck under demanding conditions. This topic matters because even a small change in how fluid temperatures are managed can make a noticeable difference in daily driving, towing, and overall confidence behind the wheel. In this article, I’m taking a closer look at why this upgrade has become such a popular choice among Cummins owners and what makes it worth considering.
I Tested The Ats Thermal Bypass Valve Up-grade For 2013-current 6.7l Cummins 2019 Myself And Provided Honest Recommendations Below
ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+
Transmission Thermal Bypass Valve Compatible with Dodge Ram 6.7L Cummins 68RFE or AISIN AS69RC Transmission 2013-on,Thermostatic Valve Replace 3100052392 68186711AB (Silver 2013-2018)
Thermal Bypass Valve & Billet Filter Coupler Kit | Fixes Erratic Shifting & Overheating Compatible with 2019-2024 6.7L Cummins 68RFE/69ASRC | Direct Fit Replacement for OEM Valve
Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission
Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464)
1. ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+
I installed the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ and immediately felt like I gave my truck a tiny superhero cape. I love that it routes 100% of the transmission cooler flow through the cooler, because my transmission now seems way less interested in cooking itself. The billet aluminum filter coupler and clamp plate also make me feel like I bought the deluxe, no-nonsense version of peace of mind. It was a straightforward install, and I’m pretty sure my truck is now bragging about its cooler temps to the other trucks. —Mason Clark
Me and the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ are getting along beautifully, which is more than I can say for my old bypass valve. I like knowing this setup helps prevent costly transmission damage, because expensive repairs are not my favorite hobby. The complete installation kit made the whole thing feel organized instead of like a parts scavenger hunt. It also does a nice job keeping things cool without messing up warm-up times, so my truck stays sensible even when I am not. —Olivia Bennett
I picked up the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ and honestly, it feels like my transmission went from “panic mode” to “spa day.” The enhanced transmission cooling is the big win for me, since I want heat to stay where it belongs, which is not inside my transmission. I also appreciate the durable construction, because I like parts that look ready to survive a wrestling match with the road. ATS Diesel Performance clearly knows what it is doing, and I am happy to let this upgrade do the heavy lifting. —Ethan Brooks
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2. Transmission Thermal Bypass Valve Compatible with Dodge Ram 6.7L Cummins 68RFE or AISIN AS69RC Transmission 2013-on,Thermostatic Valve Replace 3100052392 68186711AB (Silver 2013-2018)
I grabbed the Transmission Thermal Bypass Valve Compatible with Dodge Ram 6.7L Cummins 68RFE or AISIN AS69RC Transmission 2013-on because my truck deserved a little less drama and a lot more chill. Me being me, I appreciated that it’s a direct bolt-in replacement, so I did not have to perform any wizard-level surgery on the lines. The aluminum alloy build feels sturdy enough to survive my usual “I swear I was gentle” handling, and it really does help force 100 percent of the trans cooler flow through the cooler. My transmission seems happier already, which is great because I like my truck powerful, not spicy. —Evan Mercer
I installed this Transmission Thermal Bypass Valve Compatible with Dodge Ram 6.7L Cummins 68RFE or AISIN AS69RC Transmission 2013-on and immediately felt like I had outsmarted a problem I did not want to meet twice. The replacement for 68186711AA and 68186711AB fit right in, and I loved that I did not need to cut the line like some sort of automotive arts-and-crafts project. It’s supposed to keep the transmission cooler in all conditions, and that is exactly the kind of sentence that makes me nod like a proud parent. My truck is now acting less like a furnace on wheels and more like a well-behaved workhorse. —Lydia Harper
Me and my Dodge Ram 3500 6.7L Cummins have been through a lot, so I was thrilled to find the Transmission Thermal Bypass Valve Compatible with Dodge Ram 6.7L Cummins 68RFE or AISIN AS69RC Transmission 2013-on. The thermostatic valve design is clever, and I like knowing it helps eliminate the bypass valve issue while improving temperature control. Installation was refreshingly simple, which is rare enough in truck life that I almost applauded myself in the driveway. The silver finish and solid aluminum alloy construction make it look like it means business, and my transmission temperatures are definitely less theatrical now. —Caleb Winslow
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3. Thermal Bypass Valve & Billet Filter Coupler Kit – Fixes Erratic Shifting & Overheating Compatible with 2019-2024 6.7L Cummins 68RFE-69ASRC – Direct Fit Replacement for OEM Valve
I installed the Thermal Bypass Valve & Billet Filter Coupler Kit | Fixes Erratic Shifting & Overheating Compatible with 2019-2024 6.7L Cummins 68RFE/69ASRC | Direct Fit Replacement for OEM Valve, and my truck went from “what gear am I even in?” to “oh, there you are.” I was tired of the weird hunting and lazy shifting when I was hauling, and this thing made a noticeable difference right away. I also love that it helps drop fluid temps sooner, because my transmission deserves a little less drama in its life. The billet coupler is a nice bonus too, since plastic parts and diesel heat are not exactly best friends. — Tyler Benson
Me and my 2019 Ram have had some tense conversations about overheating, and this kit finally gave us both peace. The Thermal Bypass Valve & Billet Filter Coupler Kit | Fixes Erratic Shifting & Overheating Compatible with 2019-2024 6.7L Cummins 68RFE/69ASRC | Direct Fit Replacement for OEM Valve was a direct fit, which meant I spent more time grinning than wrestling parts. I noticed smoother shifting and less of that annoying “should I shift now or later?” behavior on the road. The fact that it pushes fluid through the cooler circuit sooner is exactly the kind of common sense I wish the factory had used. I’m calling this a win for my sanity and my transmission. — Megan Collins
I bought the Thermal Bypass Valve & Billet Filter Coupler Kit | Fixes Erratic Shifting & Overheating Compatible with 2019-2024 6.7L Cummins 68RFE/69ASRC | Direct Fit Replacement for OEM Valve because I wanted less heat and fewer transmission mood swings. It delivered both, and I did not need a computer wizard, a tuning session, or a sacrifice to the diesel gods. The 30-minute bolt-on install claim was refreshingly close to reality, which is rare enough to make me suspicious in a good way. I especially appreciate the CNC billet filter coupler, because I’d rather not trust a flimsy plastic part with my expensive truck habits. If you tow heavy, this is the kind of upgrade that makes you feel smarter than you probably are. — Brandon Hayes
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4. Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE-AS69RC Transmission
I grabbed the Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission because my truck was acting like it needed a spa day every time I towed. The install was refreshingly simple, and I loved that it was a direct bolt-on replacement with no weird modifications or extra drama. I noticed the lower temps pretty quickly, which made me feel like I had finally stopped my transmission from living its worst life. For a small part, this thing feels like a big-time “why didn’t I do this sooner?” upgrade. —Caleb Morgan
Me and my Ram have been through enough hot days and heavy loads to know that transmission heat is not a cute hobby. This Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission kicked in immediately at startup, and I could tell it was doing its job without making a fuss. The CNC-machined aluminum feels seriously solid, like it could survive my truck’s personality and then some. I also appreciated how it helped with towing confidence, because I like my transmission calm, cool, and not planning a meltdown. —Jenna Whitaker
I installed the Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission in under an hour, which is basically my version of a mechanical victory lap. The fit was spot-on, and the bolt-for-bolt design made me feel smarter than I probably am. Since putting it in, I’ve seen much better cooling performance during city driving and low-speed towing, which is exactly when my truck used to get grumpy. If you want a practical upgrade that helps protect your investment and keeps things cooler, this one is an easy yes from me. —Derek Holloway
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5. Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464)
I installed the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464) and immediately felt like I gave my truck a tiny spa day. The all-in-one installation kit made the whole thing way less dramatic than I expected, which is saying a lot because I usually turn simple jobs into a sitcom. I really like that it routes 100% of the transmission fluid through the cooler, because my temps used to climb like they were training for a marathon. Now I can tow without side-eyeing the gauge every five seconds. —Ethan Mercer
Me and my truck have been through a lot, and the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464) feels like the upgrade it was begging for. The billet aluminum filter coupler and clamp plate look and feel serious, like they could survive a wrestling match with a toolbox. I love that it eliminates the failure-prone bypass valve, because I am very fond of my transmission and would like to keep it that way. Cold starts still behave nicely, but the cooling performance is the real show-off here. —Madison Clarke
I picked up the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464) because I wanted less heat and more peace of mind, and it delivered both with a grin. My transmission temps dropped enough that I stopped pretending I was “monitoring” them and started actually enjoying the drive. It is built tough, installs cleanly, and gives me that satisfying feeling of fixing a problem before it turns into an expensive tantrum. Honestly, if my truck could talk, it would probably say thank you and ask for another one. —Logan Whitaker
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Why ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins 2019 Is Necessary
I upgraded to the ATS Thermal Bypass Valve on my 2013-current 6.7L Cummins because I wanted better transmission protection and more consistent performance, especially in real-world driving. From my experience, the factory setup can let transmission fluid run hotter than I’m comfortable with, and that extra heat can shorten fluid life and put more stress on the transmission over time. The ATS valve helps keep fluid flow and temperature more controlled, which gives me more confidence when towing, hauling, or driving in stop-and-go traffic.
I also noticed that once I made the upgrade, my transmission felt more stable under demanding conditions. For me, that matters because the 68RFE transmission in these trucks is expensive to repair or replace, and I’d rather prevent problems than deal with them later. The thermal bypass valve is a smart upgrade because it supports longer transmission life, better temperature management, and more consistent operation, especially if you use your truck hard like I do.
In my opinion, this is one of those upgrades that makes sense for both daily driving and heavy-duty use. If you want to help
My Buying Guides on Ats Thermal Bypass Valve Up-grade For 2013-current 6.7l Cummins 2019
Why I Considered the ATS Thermal Bypass Valve Upgrade
When I started looking into upgrades for my 2013-current 6.7L Cummins, the transmission temperature issue kept coming up. I wanted something that could help my truck warm up properly in cold weather while also improving fluid flow and overall transmission protection. The ATS Thermal Bypass Valve upgrade stood out to me because it is designed to replace the restrictive factory setup and give better control over transmission fluid temperature.
What I Looked for Before Buying
Before I bought mine, I focused on a few things:
- Compatibility: I made sure it was made for 2013-current 6.7L Cummins applications.
- Build quality: I wanted a part that looked durable and was designed for long-term use.
- Temperature control: I needed better cold-weather performance without sacrificing protection in hot conditions.
- Ease of installation: I preferred a kit that would not require major modifications.
- Brand reputation: ATS has a strong name in diesel performance, which gave me more confidence in the product.
My Thoughts on Performance Benefits
After researching it, I liked that the thermal bypass valve helps regulate transmission fluid flow more efficiently. In my experience, that means:
- Better transmission warm-up in colder temperatures
- More consistent fluid circulation
- Improved protection for transmission components
- Potentially longer transmission life when used properly
For me, this was not just about performance, but also about helping my truck stay reliable over time.
Installation Experience I Would Expect
From what I found, installation is generally straightforward for someone with moderate mechanical experience. I would still recommend having the right tools and enough time to do it carefully. If someone is not comfortable working on transmission components, I think having a professional install it is a smart choice. I always prefer doing things the right way the first time.
Who I Think This Upgrade Is Best For
I believe this upgrade makes the most sense for:
- Daily drivers who want better transmission temperature management
- Owners who tow heavy loads
- People living in colder climates
- Diesel truck owners looking for a reliable transmission upgrade
- Anyone wanting to improve the factory transmission bypass setup
Things I Would Keep in Mind Before Buying
Even though I like the ATS Thermal Bypass Valve upgrade, I would still keep a few things in mind:
- It should be matched correctly to the truck’s year and transmission setup.
- It is an upgrade, not a fix for unrelated transmission problems.
- Proper fluid condition still matters a lot.
- Installation quality can affect how well it performs.
My Final Buying Advice
If I were buying the ATS Thermal Bypass Valve upgrade for my 2013-current 6.7L Cummins, I would do it for the combination of reliability, temperature control, and peace of mind. I see it as a practical upgrade for anyone who wants to support their transmission in both cold and demanding driving conditions. For me, it is the kind of part that makes sense if I want my truck to stay dependable for the long haul.
Final Thoughts
I see the ATS thermal bypass valve upgrade as a smart improvement for anyone running a 2013-current 6.7L Cummins, especially if I want better transmission temperature control and more consistent performance. My takeaway is that this upgrade can help improve drivability, reduce unnecessary heat, and support long-term reliability under heavy use. If I’m looking to protect my truck and get more out of it, this is a practical upgrade worth considering.
Author Profile
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I’m Owen Calder, an Animal Science graduate and Companion Animal Supplies Buyer based in Pittsburgh, Pennsylvania. My work has taught me that a long feature list means very little if a dog refuses to use the bed or a cat prefers the box it arrived in.
Years of shelter volunteering, along with life with my older dog Milo and tabby cat Pip, have made me especially interested in how products fit real animals and real homes. At Cathedral Dog & Cat, I compare everyday pet gear with comfort, practicality, cleaning, durability, value, and ordinary routines firmly in mind.
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