Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass Full Flow
SKU: 37269726585

Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass Full Flow

Sale price$92.25 Regular price$102.50
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass Full FlowThe 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 the Aisin AS69RC utilizes an in line thermal bypass valve that

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 the Aisin AS69RC utilizes an in-line thermal bypass valve that controls fluid flow 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 a full-flow thermal bypass valve upgrade for your 2019-2024 RAM 6.7L Cummins. Our CNC-machined aluminum thermal bypass valve not only looks better than the stock unit, but it performs better too. This Mishimoto thermal bypass valve eliminates the internal thermostat, providing full fluid flow to the transmission cooler in all running conditions. This setup is ideal for owners in warm climates, those performing heavy towing, and trucks needing the best possible cooling efficiency for their transmission. The Mishimoto full-flow thermal bypass valve features strategically machined internal passages, providing improved flow over the stock valve for more effective cooling. In addition, cooling fins machined into the valve body add even more heat dissipation. This 2019-2024 RAM 6.7L Cummins Thermal Bypass Full Flow Valve Kit is built to last a lifetime with a durable CNC-machined billet aluminum design and our Mishimoto Lifetime Warranty.

  • Equipped with a bypass for uninterrupted cooling in hot weather conditions
  • Features a fully serviceable thermostat for rapid warm-up in cold weather
  • Helps extend transmission life and prevents overheating

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: 37269726585

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Gary kirshman
Charlottesville, US
★★★★★ 5
I would buy again
Color: White
Great price and works great, very bright and easy to install
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Reviewed in the United States on September 7, 2025
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T. Roberts
Natrona Heights, US
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Light Up Your Table
Color: White
Easy to attach and turn on/off
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irene
Bozeman, US
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Affordable
Color: White
Very nice
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Reviewed in the United States on June 17, 2025
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Amazon Customer
Lexington, US
★★★★★ 1
Not worth it
Color: White, Color: White
Put new batteries in twice and won’t turn on. Such a waste of money.The brightness is little to none , they were working amazing in the beginning. The picture included is the highest setting and has barely any brightness.
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Jacaline B.
Port Orchard, US
★★★★★ 5
Beautiful angel for garden, doorstep or inside.
Color: White, Color: White
Our sister in law passed away on Easter Morning. We decided to send this to my brother and his family. It’s absolutely gorgeous. We mailed it to Germany and because it’s not as heavy as it looks it only cost us under $30 to send. A lot better than flowers, when you never know what they’ll look like when they arrive. We were all very pleased.
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Reviewed in the United States on May 4, 2026

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