Pay in installments of $24.99 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mishimoto Transmission Cooler Thermal Bypass Kit 19-26 Ram 6.7L CumminsThe Mishimoto Transmission Cooler Thermal Bypass Valve Kit for the Ram 6. 7L Cummins is the perfect solution to one of the biggest transmission cooling flaws in your truck. The stock thermal bypass valve is supposed to regulate fluid flow to the transmission cooler, but when it fails, it can block fluid completely, leading to overheating and serious transmission damage. Mishimotos upgraded bypass valve ensures that never happens, keeping your
The Mishimoto Transmission Cooler Thermal Bypass Valve Kit for the Ram 6.7L Cummins is the perfect solution to one of the biggest transmission cooling flaws in your truck.
The stock thermal bypass valve is supposed to regulate fluid flow to the transmission cooler, but when it fails, it can block fluid completely, leading to overheating and serious transmission damage. Mishimoto’s upgraded bypass valve ensures that never happens, keeping your transmission cool and performing at its best no matter what you throw at it. Crafted from CNC-machined billet aluminum, this valve isn’t just built to last, it’s designed for maximum cooling efficiency. Strategically machined internal passages improve flow over stock, while built-in cooling fins help dissipate heat even further. The direct-fit design ensures a hassle-free installation, getting you back on the road with confidence.
Available in two options, this kit lets you choose the best setup for your needs:
- The full-flow valve eliminates the thermostat entirely, allowing transmission fluid to circulate through the cooler at all times, making it the ideal choice for hot climates, heavy towing, and high performance applications.
- If you’re looking for a more controlled approach or operate in a consistently cold climate, the upgraded high flow thermostat valve features a replaceable thermostat that’s far more durable than stock and opens 10°F earlier, allowing fluid to reach the cooler sooner without overcooling. This option also includes a bypass insert, so you can easily switch between thermostat controlled and full-flow modes with just a wrench.
Whether you need maximum cooling all the time or a smarter way to regulate transmission temps, Mishimoto has the solution to keep your truck running cool and strong.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 25 reviews
Sort
Product Reviews
★★★★★ 5
Happy Girl
Color: Black, Size: 10 Years
Amazing!!!!! Great color. The suit was a perfect slim fit. It is well made and excellent value for the money. I will purchase this brand again! Thank you.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Great Suit
Color: Black, Size: 14 Years
Fantastic suit. My son's first suit. It fit well and came with vest and suspenders. Great quality. The bow tie was subpar and won't be used but everything else works and looks amazing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
★★★★★ 5
Good quality
Color: Burgundy, Size: 8 Years
Very good quality, looked very nice on my son. It fit him perfect, I bought a size 8 for my 8 year old
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
Good quality
Color: Purple, Size: 14 Years
Really cute! Material is good for the price. May want to size up. Everything as pictured
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Good quality with an even better price for all the items you get
Color: Black, Size: 8 Years, Color: Black, Size: 8 Years
A little large/long but good quality. I think my son is pretty average sized for an 8 year old. My fault for getting it last minute so we didn’t have time to get it fitted. The quality was better than expected especially for the price. He told me he was super comfortable in it so that was the biggest win! Shirt not included and he took his jacket off for the picture.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025