SKU: 67541798183

Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass

Sale price$175.41 Regular price$194.90
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  • CAN

Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

Mishimoto 2019+ RAM 6.7L Cummins Thermal BypassThe transmission is the backbone of your RAM. It's responsible for transmitting large amounts of torque from your 6. 7L Cummins powerplant, and that torque generates heat. If that heat isn't dissipated, it can destroy your transmission. The transmission cooler does a good job of keeping trans fluid temperatures in check, but only if the fluid can reach it. The stock cooling system of both the 68 RFE and Aisin AS69RC utilize an in line thermal bypass

The transmission is the backbone of your RAM. It's responsible for transmitting large amounts of torque from your 6.7L Cummins powerplant, and that torque generates heat. If that heat isn't dissipated, it can destroy your transmission. The transmission cooler does a good job of keeping trans fluid temperatures in check, but only if the fluid can reach it. The stock cooling system of both the 68-RFE and Aisin AS69RC utilize an in-line thermal bypass valve that controls the flow of fluid to the transmission cooler. The purpose of this valve is to prevent transmission fluid from flowing to the cooler until it reaches operating temperature. The thermostat inside this valve is prone to failure, however, and when that happens, the fluid never flows to the cooler and the transmission can overheat. That's why Mishimoto has developed an improved thermal bypass valve kit for your 2019-2024 Dodge Ram 6.7L Cummins. Our CNC-machined aluminum thermal bypass valve not only looks better than the stock unit, but it performs better too. The Mishimoto thermal bypass valve utilizes a replaceable thermostat that is more durable than the stock thermostat and opens about 10 F earlier. This allows fluid to flow to the cooler sooner, without over-cooling. For owners in hot climates, the Mishimoto valve includes a bypass that allows full flow to the transmission cooler, regardless of temperature. The bypass can be easily swapped out with only a wrench for summer or winter driving. The Mishimoto thermal bypass valve flows better in both configurations than the stock valve for more effective cooling. Cooling fins machined into the valve body add even more heat dissipation. This 2019-2024 Dodge Ram 6.7L Cummins Thermal Bypass Valve Kit is built to last a lifetime with a durable black anodized finish and our Mishimoto Lifetime Guarantee.

  • Product is included with a thermostat bypass for constant cooling in hot climates
  • Features a fully serviceable thermostat for rapid warm-up in cold weather
  • Increased flow over stock bypass valve

This Part Fits:

Year Make Model Submodel
2019-2024 Ram 2500 Big Horn
2019-2024 Ram 2500 Laramie
2019-2021 Ram 2500 Laramie Longhorn
2019-2024 Ram 2500 Limited
2021-2024 Ram 2500 Limited Longhorn
2019-2024 Ram 2500 Lone Star
2023-2024 Ram 2500 Rebel
2024 Ram 2500 Special Service
2019-2024 Ram 2500 Tradesman
2019-2024 Ram 3500 Big Horn
2019-2024 Ram 3500 Laramie
2019-2020 Ram 3500 Laramie Longhorn
2019-2024 Ram 3500 Limited
2021-2024 Ram 3500 Limited Longhorn
2019-2022 Ram 3500 Lone Star
2019-2024 Ram 3500 SLT
2024 Ram 3500 Special Service
2019-2024 Ram 3500 Tradesman
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 67541798183

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Daniel Ogunlowo
Waukegan, US
★★★★★ 5
Nice jacket
Size: Medium, Color: Grey 01
Nice jacket . Material exactly as described.
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Reviewed in the United States on February 3, 2026
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Cuba, US
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Edward
Bozeman, US
★★★★★ 5
Black mens coat
I didn't expect such good quality from such an inexpensive black coat, stylish, neat, looks expensive, none of my friends believed that I bought it so cheaply! No pellets appeared after a year and a half of use
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Reviewed in the United States on March 15, 2025
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Omaha, US
★★★★★ 4
Has shoulder pads.
The jacket has shoulder pads that don't necessarily show on the image in the purchase area. Pretty pronounced so if that's not your thing definitely stay away. Got lucky and it doesn't look too bad on me but it took so long to receive the package I don't feel like going through the refund process so I'm dealing with it. Quality is great tho
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Reviewed in the United States on January 23, 2024
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Luis Chávez
Boise, US
★★★★★ 5
Softness
Size: Medium, Color: A-red
High quality material !
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Reviewed in the United States on January 6, 2026

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