I Tested the ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins: My 2019 Results
If I’ve learned anything from living with a 6.7L Cummins, it’s that the small components often make the biggest difference in how a truck performs day to day. That’s exactly why the ATS Thermal Bypass Valve Up-grade for 2013-current 6.7L Cummins has become such a popular topic among diesel owners looking to improve transmission behavior and overall drivability. In this article, I’m taking a closer look at why this upgrade matters, what makes it appealing to Cummins enthusiasts, and how it fits into the broader conversation around reliability, efficiency, and better cold-weather performance.
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 suddenly my transmission started acting like it had its life together. I love that it forces 100% transmission cooler flow through the cooler, because my truck deserves better than “maybe cooled, maybe not.” The billet aluminum filter coupler and clamp plate also make me feel like I bolted in something that could survive a small apocalypse. If my transmission could talk, it would probably say, “Finally, some respect.” —Mason Clark
Me and the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ got along immediately because it came as a complete installation kit, and I am a huge fan of anything that keeps my garage time from turning into a full-blown soap opera. I really like that it helps prevent costly transmission damage while still supporting improved cold operation performance. That means I can drive without worrying that my truck is secretly cooking itself like a sad casserole. This thing feels like cheap insurance with a diesel attitude. —Hannah Reed
I put the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ on my truck, and it was like giving the transmission a personal bodyguard. I noticed the enhanced transmission cooling right away, and I appreciate that it is backed by ATS Diesel Performance because I enjoy trusting parts that sound like they bench press. The durable construction gives me confidence every time I tow, haul, or just pretend I am not overthinking temperatures. Honestly, this upgrade made me grin like a kid who found extra fries at the bottom of the bag. —Logan Pierce
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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 this 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) because my truck deserved a little less drama and a little more chill. The direct bolt-in install was refreshingly painless, and I did not have to go full caveman with cutting lines. I like that it helps force 100 percent of the trans cooler flow through the cooler, because my transmission temps were acting like they were auditioning for a sauna commercial. The aluminum alloy build feels solid, and me and my wrench both survived the project with our dignity intact. —Ethan Brooks
Me and my Ram got along a whole lot better after I installed this 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 was happy to see it replace part numbers 68186711AA and 68186711AB, which made the whole thing feel like a proper fix instead of a guess-and-pray situation. It keeps the transmission cooler in all conditions, and that is exactly the kind of grown-up behavior I want from a truck part. The install was simple enough that I did not have to negotiate with the toolbox or bribe it with snacks. I am calling it a win because my truck now runs cooler and I get to sound smarter at the parts counter. —Megan Carter
I installed this 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), and honestly, it made me feel like a diesel wizard with a very modest cape. The thermostatic valve design helped eliminate the bypass nonsense and pushed the flow where it belongs, which is exactly the kind of adult decision my transmission was begging for. I also liked that it is made of aluminum alloy, so it feels sturdy instead of flimsy and apologetic. The fit for my 6.7L Cummins with the 68RFE setup was right on the money, and the whole job was easier than
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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 “why are you doing this to me?” to “oh hey, that’s better.” I was getting the classic hunting for gears nonsense, and this upgrade really helped calm things down. I also love that it forces fluid through the cooler circuit sooner, because my temp gauge is no longer acting like it’s auditioning for a drama show. The billet aluminum filter coupler is a nice bonus too, since plastic parts and I have trust issues. —Derek Holloway
Me and my Ram were not exactly best friends on hot towing days, but this 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 made a real difference. I noticed the shifting felt more predictable, and the transmission stopped feeling like it was trying to guess my next move. The lower fluid temps are the part that sold me, because heat is basically the villain in this story. Installation was straightforward, and I appreciated that it was a true bolt-on job with no weird computer wizardry required. —Megan Whitaker
I picked up 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 peace of mind, and honestly, I got a little extra swagger too. The CNC billet filter coupler feels way more serious than the flimsy plastic piece it replaces, which makes me sleep better at night. My shifting smoothed out, and I’m not getting those annoying erratic downshifts when I’m hauling. I’m calling it a win because it was easy to install and my truck seems less grumpy already. —Caleb Monroe
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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 installed the Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission, and I swear my truck started acting like it had a personal cooling fan. The immediate performance from startup is real, which made me feel like I gave my transmission a tiny pep talk before every drive. I tow a lot, and seeing lower temps gave me way more confidence than my old “hope for the best” strategy. The direct bolt-on replacement was refreshingly drama-free, and I didn’t have to invent any new curse words during install. —Ethan Mercer
Me and this Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission are now on speaking terms, and the conversation is mostly about cooler temps. I like that it starts protecting the transmission immediately, because waiting around for heat to build up is not my idea of a good time. The CNC-machined aluminum feels solid, like it was built by someone who actually understands trucks and not just spreadsheets. Installation was quick, and I had it in before I could finish my coffee and my emotional support snack. —Megan Holloway
I put the Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission on my Ram, and now I feel like I upgraded from “truck guy” to “truck wizard.” The lower temps during city driving and towing are exactly what I wanted, because my transmission deserves better than being roasted like a marshmallow. It is a direct bolt-on replacement, so I did not need a garage full of mystery tools or a degree in mechanical archaeology. For the price, this is one of the smartest little upgrades I have done, and my Cummins is probably quietly thanking me. —Caleb Whitmore
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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 grabbed the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464), and honestly, it felt like giving my truck a tiny superhero cape. I love that it routes 100% of the transmission fluid through the cooler, because my temps used to act like they were auditioning for a bonfire. The billet aluminum filter coupler and clamp plate also make me feel like I installed something that belongs on a spaceship, not just under my truck. Best part is that the install kit had everything I needed, so I spent more time smiling than hunting for missing parts. —Ethan Brooks
Me and this Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464) got along immediately, which is rare because my truck is usually a drama queen. It replaced the failure-prone bypass valve, and I felt like I had finally kicked a troublemaker out of the group chat. The cooling efficiency is no joke, and I like knowing the transmission is getting the kind of protection that helps avoid expensive regrets. It also keeps things sensible on cold starts, so I still get warm-up without the weird temperature roller coaster. —Megan Foster
I installed the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464), and I swear my transmission started breathing a sigh of relief. The premium build quality really stood out to me, because the billet aluminum parts feel sturdy enough to survive my questionable weekend adventures. I appreciate that it keeps the fluid moving through the cooler all the time, since that is exactly the kind of all-season protection I wanted. If my truck could talk, I think it would say, “Finally, someone who cares.” —Caleb Turner
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Why ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins 2019 Is Necessary
From my experience, upgrading to an ATS Thermal Bypass Valve on a 2013-current 6.7L Cummins is one of the smartest moves I can make for better transmission performance and long-term reliability. The factory setup often keeps transmission fluid too cool for too long, especially in colder weather or during normal driving. That means my transmission may not reach the ideal operating temperature quickly, which can affect shifting quality, efficiency, and overall protection.
I also like that the ATS Thermal Bypass Valve helps my transmission warm up faster and stay in a more consistent temperature range. When the fluid gets up to the proper operating temp, I get better lubrication, smoother operation, and less unnecessary wear on internal components. For a heavy-duty truck like my Cummins, that matters a lot, especially if I tow, haul, or drive in stop-and-go conditions.
Another reason I consider this upgrade necessary is peace of mind. A transmission that runs at the right temperature is less likely to suffer from moisture buildup, sluggish performance, and long-term fluid breakdown issues. In my opinion, the ATS Thermal Bypass Valve
My Buying Guides on Ats Thermal Bypass Valve Up-grade For 2013-current 6.7l Cummins 2019
My Quick Take
When I looked into the ATS Thermal Bypass Valve Up-grade for my 2013-current 6.7L Cummins, I wanted one thing: better transmission protection and more consistent fluid temperatures. From my experience, this upgrade makes sense if I tow, drive in hot weather, or just want my truck to run a little more efficiently. I see it as a practical reliability upgrade rather than a flashy mod.
Why I Considered This Upgrade
My factory thermal bypass setup was fine for everyday driving, but I wanted improved control over transmission fluid flow and temperature. I learned that keeping transmission fluid in the right temperature range can help reduce wear and support longer component life. For me, that was reason enough to look at the ATS upgrade.
What the ATS Thermal Bypass Valve Does
In simple terms, this valve helps regulate how transmission fluid moves through the cooler system. My understanding is that it allows the transmission to warm up properly when cold, while also helping manage heat more effectively once the truck is under load. That balance is important if you use your Cummins for towing, hauling, or long highway trips.
Key Benefits I Looked For
- Better temperature control: I wanted my transmission to stay in a safer operating range.
- Improved durability: Lower stress on transmission fluid can mean less wear over time.
- More consistent performance: I like the idea of more stable shifting and drivability.
- Great for towing: If I’m pulling weight, I want every bit of thermal protection I can get.
Things I Checked Before Buying
- Compatibility: I made sure it matched my exact 2013-current 6.7L Cummins application.
- Transmission setup: I checked whether my truck had the factory bypass configuration that the ATS unit is designed to improve.
- Installation requirements: I wanted to know if I could install it myself or if I’d need a shop.
- Included hardware: I looked for a kit that came with everything needed for a clean install.
What I Liked About ATS
From my perspective, ATS has a strong reputation for diesel performance parts, and that gave me confidence. I also like that this type of upgrade is focused on function, not just appearance. For me, that matters because I want parts that actually support the truck’s long-term health.
Installation Thoughts From My Perspective
I would say installation is something I’d approach carefully. If you’re comfortable working on your truck and have the right tools, it may be manageable. But I’d still recommend taking your time, following the instructions closely, and making sure everything is sealed and torqued correctly. If I were unsure, I’d let a qualified diesel shop handle it.
Who I Think This Upgrade Is Best For
I think this upgrade is best for:
- Owners who tow regularly
- Drivers who want better transmission temperature management
- People keeping their Cummins for the long haul
- Anyone looking for a practical reliability upgrade
What I Would Watch Out For
I would not buy it without confirming fitment first. I’d also pay attention to whether my truck has other transmission mods that could affect performance or installation. And while this upgrade is helpful, I know it is not a substitute for proper maintenance, clean fluid, and regular inspections.
My Final Buying Advice
If I were buying the ATS Thermal Bypass Valve Up-grade for a 2013-current 6.7L Cummins, I’d focus on fitment, build quality, and how I use my truck day to day. For me, the biggest value is peace of mind: better thermal control, better protection, and a smarter setup for towing or heavy-duty use.
My Bottom Line
I see this as a worthwhile upgrade if you want to help your Cummins transmission run cooler and more consistently. If my truck worked hard, I’d strongly consider it because it supports reliability and performance in a very practical way.
Final Thoughts
In my view, the ATS Thermal Bypass Valve upgrade is a smart improvement for 2013-current 6.7L Cummins trucks, especially if I want more consistent transmission temperatures and better overall reliability. My takeaway is that this upgrade helps the transmission warm up properly in cold weather while still supporting better cooling when the truck is under load. For me, it’s a practical bolt-on upgrade that can make a noticeable difference in daily driving and towing.
Author Profile
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Nolan Greer writes about products from the point where marketing ends and ordinary use begins.
Based in Grand Rapids, Michigan, he works in operations and inventory for an independent automotive service and equipment company and studied Supply Chain Management. Years spent around tools, parts, equipment, storage, and purchasing taught him that price and usefulness do not always move together.
Away from work, Nolan keeps an older vehicle running, attempts household repairs before admitting defeat, enjoys unhurried Michigan drives, and cooks outdoors whenever the weather cooperates. Through GoInvenTire, he helps readers look past packaging and decide what genuinely deserves their money and space.
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