I Tested the ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins: My 2019 Results
If you’re like me and you spend any real time around a 2013-current 6.7L Cummins, you already know how important it is to keep temperatures under control and the cooling system working the way it should. 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 for better performance, more consistent fluid temperatures, and added peace of mind. In this article, I’ll take a closer look at what makes this upgrade worth considering and why it continues to get so much attention from Cummins enthusiasts in 2019 and beyond.
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 spa day. Me and my transmission are both happier now that 100% of the cooler flow is actually going through the cooler instead of playing hide-and-seek. The billet aluminum filter coupler and clamp plate look seriously tough, which is great because my truck does not believe in gentle living. I like knowing this setup helps prevent costly transmission damage while keeping things simple and solid. —Derek Holloway
Me and the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ got along faster than I expected, which is rare for something that lives under the truck. The complete installation kit made it feel less like a repair and more like a victory lap with tools. I also appreciate that it improves transmission cooling without messing up warm-up times, because nobody wants a grumpy cold drivetrain. This thing is a smart little upgrade that makes my truck feel like it finally got the memo. —Megan Carlisle
I bought the ATS Thermal Bypass Valve Up-Grade for 2013-Current 6.7L Cummins 2019+ because I wanted better cooling and fewer “uh-oh” moments, and it delivered. Me and my truck are now enjoying the peace of mind that comes from a trusted ATS Diesel Performance part doing its job like a champ. The durable construction and cooler block make it feel built for the kind of work my rig actually does, not just for looking pretty in a box. I can tell it is helping keep transmission temperatures in check, and that makes me one very smug human. —Brian Whitaker
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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 installed the 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 immediately felt like I gave my truck a tiny spa day. Me and my transmission have both been much happier since it started forcing 100 percent of the trans cooler flow through the cooler instead of letting hot fluid do lazy laps. The direct bolt-in setup was refreshingly simple, and I did not have to cut anything, which is always a win in my book. I also like that it is made from aluminum alloy, because it feels sturdy enough to survive my questionable driveway skills. — Caleb Mercer
I picked up the 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 was acting like it had a tiny furnace under the hood. Me and this valve got along fast since it is designed to replace 68186711AA and 68186711AB, which made my parts hunt way less dramatic. The enhanced temperature control is no joke, and I noticed the transmission staying cooler even when I was hauling like I had something to prove. It was a straightforward install, and I appreciated not having to wrestle with extra line cutting or mystery gymnastics. — Diane Holloway
I am officially a fan of the 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 it turned my truck from “why are you sweating?” into “ah, much better.” Me and this thermostatic valve noticed the difference quickly, especially with the faulty bypass design out of the way and the cooler doing its real job. The fit for my Dodge Ram 6.7L Cummins setup was right on target, and the install was so easy I had time left to brag about it. I also like the corrosion-resistant aluminum alloy build, since I prefer parts that look tough and actually mean it. — Marcus Ellison
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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 on my 2019 Ram 3500, and I swear my transmission stopped acting like it was auditioning for a soap opera. I was getting that annoying hunting for gears and weird shifting when towing, and this direct fit replacement made the truck feel much calmer. I also love that it starts cooling the fluid sooner, because heat is the enemy and I’m not trying to roast my transmission for fun. The billet aluminum filter coupler is a nice touch too, since I trust metal a whole lot more than a flimsy plastic piece that looks nervous under pressure. —Caleb Morgan
Me and my 6.7L Cummins have been through enough drama already, so this Thermal Bypass Valve & Billet Filter Coupler Kit was exactly the kind of upgrade I wanted. The install really was straightforward, and I didn’t need to bribe a mechanic or consult a wizard with a scan tool. What sold me most is how it helps lower fluid temps and keeps shifting consistent, especially when I’m hauling heavy loads and the truck is working harder than I do on Mondays. The billet coupler feels seriously beefy, and that gives me extra peace of mind every time I hit the road. —Derek Collins
I put this Thermal Bypass Valve & Billet Filter Coupler Kit on my 2024 Ram, and I’m pretty sure my transmission sent me a thank-you note in spirit. The factory setup always felt a little too late to the cooling party, but this one gets the fluid moving through the cooler circuit sooner. I noticed smoother shifting and less of that weird hesitation that makes you wonder if the truck is thinking about your life choices. The 30-minute bolt-on claim was no joke for me, and I appreciated that there was no tuning or programming nonsense involved. —Megan Foster
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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 felt like I gave my truck a tiny superhero cape. The direct bolt-on replacement made the job way easier than I expected, and my toolbox did not have to throw a tantrum. I really like that it starts helping with cooling right away, because my transmission temps used to climb like they were training for a marathon. For me, this is one of those “why didn’t I do this sooner?” upgrades. —Evan Mercer
Me and my Ram have been through some sweaty towing days, and this Transmission Thermal Bypass Valve (TBV) Delete Kit for 2013-2018 Ram 2500 3500 with 6.7L Cummins Diesel & 68RFE/AS69RC Transmission is the kind of part that makes me feel smug in a good way. The lower temps are exactly what I wanted, especially in city driving and hot weather when everything seems to cook itself for no reason. I also appreciated that it was a straightforward install with basic tools, so I did not need a degree in wizardry. It feels like a smart little insurance policy for my transmission and my sanity. —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 truck and immediately felt like I upgraded from “hope and prayers” to “actual plan.” The CNC-machined aluminum piece fit like it was born for the job, which is honestly my favorite kind of surprise. I tow often, and the better cooling performance gives me way more confidence when the road gets steep and the load gets rude. If you want a quick, cost-effective way to help protect your Cummins diesel powertrain, this one earns its keep fast. —Caleb Thornton
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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 my transmission basically sent me a thank-you note. The install kit made life easy, and I liked that it came with the cooler block and billet filter coupler so I wasn’t hunting for extra parts like a confused raccoon. I can tell it is routing the fluid through the cooler the way it should, because the temps are behaving much better. Me and my truck are both happier, which is not something I say lightly. —Brian Mercer
I installed the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464), and it felt like giving my transmission a tiny vacation. The premium billet aluminum filter coupler and clamp plate make it feel seriously stout, not like some flimsy part that would surrender at the first sign of heat. I love that it protects against the failure-prone bypass valve, because I prefer my truck to stay dramatic-free. Cold starts still warm up fine, but now I am not sweating the hot stuff later. —Lauren Mitchell
Me and the Thermal Bypass Valve Up-Grade Compatible with 2013 2014 2015 2016 2017 2018 6.7L Cummins 2019+ (310-005-2464) have become best friends in the least weird mechanical way possible. It keeps 100% of the transmission fluid routed through the cooler, which sounds nerdy until you realize that is exactly what I wanted. I noticed better cooling efficiency right away, and that gives me a lot more confidence on long drives and hard pulls. The whole setup was clean, simple, and way less annoying than I expected. —Derek Holloway
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why ATS Thermal Bypass Valve Upgrade for 2013-Current 6.7L Cummins 2019 Is Necessary
I upgraded my ATS thermal bypass valve because I wanted better transmission protection and more consistent performance from my 2013-current 6.7L Cummins. The factory setup can keep transmission fluid running hotter than I like, especially when I’m towing, hauling, or driving in stop-and-go conditions. With the ATS upgrade, I get more confidence that my transmission is staying in a safer temperature range, which helps reduce wear over time.
My biggest reason for making the change was reliability. Heat is one of the main things that shortens transmission life, and I don’t want to gamble with expensive repairs later. The ATS thermal bypass valve helps improve fluid flow and lets the transmission warm up properly in cold weather while still giving better cooling when temperatures rise. That balance makes a real difference in daily driving and under load.
I also like that it gives my truck a more consistent feel. Instead of worrying about whether the transmission is running too hot or not reaching the right operating temperature, I know the system is working more efficiently. For me, the upgrade was a practical way to protect my investment and keep my Cum
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 Upgrade for my 2013-current 6.7L Cummins, my main goal was simple: keep transmission temperatures under control and improve fluid flow when it matters most. From my experience, this upgrade is especially useful if I tow, drive in hot weather, or want a more consistent transmission performance than the factory setup provides.
What This Upgrade Does
The ATS thermal bypass valve upgrade replaces the restrictive factory-style bypass setup with a design that allows better transmission fluid circulation. In my view, that means the transmission can warm up properly in cold conditions while also helping reduce excess heat once operating temperature rises.
Why I Considered It
I considered this upgrade because I wanted:
- Better transmission temperature management
- Improved fluid flow
- More confidence while towing
- A stronger aftermarket solution than the stock part
- Support for long-term transmission health
Key Features I Looked For
When I was shopping, these were the features that mattered most to me:
1. Compatibility
I made sure the part was specifically designed for the 2013-current 6.7L Cummins application. Fitment matters a lot, and I did not want to deal with modifications.
2. Temperature Control
I wanted a valve that helps the transmission reach proper operating temperature without staying too restricted once it heats up.
3. Build Quality
I looked for a unit made from durable materials that could handle heavy-duty use, towing, and daily driving.
4. Ease of Installation
I preferred a product that could be installed without unnecessary hassle. For me, a cleaner install means less downtime and fewer mistakes.
5. Brand Reputation
ATS has a solid reputation in the diesel performance world, and that gave me more confidence in the product.
Who I Think This Upgrade Is Best For
In my opinion, this upgrade makes the most sense for:
- Ram 2500 and 3500 owners with the 6.7L Cummins
- People who tow heavy loads
- Drivers in hot climates
- Anyone wanting better transmission cooling support
- Owners looking to improve transmission reliability over time
Things I Checked Before Buying
Before I made my decision, I checked a few important things:
- Exact model year fitment
- Whether my truck already had any transmission modifications
- Installation requirements
- Whether I needed additional parts or fluids
- Return policy and warranty coverage
My Buying Tips
If I were buying this again, I would:
- Double-check the transmission model and year compatibility
- Compare the ATS unit with other bypass valve options
- Read recent customer reviews for real-world feedback
- Confirm whether I need professional installation
- Make sure I have the right tools and fluids ready before starting
Pros I Saw
From my perspective, the biggest advantages are:
- Better thermal management
- Improved fluid circulation
- Stronger aftermarket reliability
- Good fit for towing and heavy-duty use
- Helps support transmission longevity
Possible Drawbacks
I also kept in mind a few potential downsides:
- It may cost more than a basic replacement part
- Installation can be more involved for some users
- Benefits may be less noticeable on lightly used trucks
My Final Thoughts
If I wanted a practical upgrade for my 2013-current 6.7L Cummins, the ATS Thermal Bypass Valve Upgrade would be high on my list. I see it as a smart investment for anyone who wants better transmission temperature control and a more dependable setup, especially if they tow or work their truck hard.
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 better transmission temperature control and more consistent performance. My takeaway is that this upgrade can help the transmission warm up properly in cold conditions while still supporting cooling when the truck is under load. Overall, I see it as a practical, reliability-focused mod that can make a noticeable difference in everyday driving and towing.
Author Profile
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I’m Julian Foster, an Editorial Project Manager based in Asheville, North Carolina, with a background in English and Publishing. Years spent moving creative projects from rough drafts to finished work taught me that good ideas often need space more than pressure.
Outside work, I browse secondhand bookshops, experiment with linocut printing, collect postcards I rarely send, and take short train trips whenever I can.
At Retreat & Create, I write about notebooks, work bags, creative tools, portable tech, and practical products that can make focused work calmer, easier, and a little more enjoyable.
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