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Description
Mishimoto 2016-2020 Jeep Grand Cherokee Thermal Bypass Valve KitThe transmission is the backbone of your Grand Cherokee. It's responsible for transmitting large quantities of torque from your V8 or 3. 0L EcoDiesel powerplant. That much torque generates a lot of heat, and 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 8HP transmission utilizes an
The transmission is the backbone of your Grand Cherokee. It's responsible for transmitting large quantities of torque from your V8 or 3.0L EcoDiesel powerplant. That much torque generates a lot of heat, and 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 8HP transmission 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 thermal bypass valve upgrade for your 2016-2020 Jeep Grand Cherokee. 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 kit includes a fully serviceable thermostat for fast warm-up in cold climates. This kit also includes a thermostat bypass that can be installed to provide constant cooling in warm climates or for use in extreme driving/towing conditions. The Mishimoto 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 2016-2020 Jeep Grand Cherokee Thermal Bypass Full-Flow Valve Kit is built to last a lifetime with a durable black anodized finish and our Mishimoto Lifetime Warranty.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2020 | Dodge | Durango | Citadel |
| 2018 | Dodge | Durango | GT |
| 2019-2020 | Dodge | Durango | Pursuit |
| 2018-2020 | Dodge | Durango | R/T |
| 2018-2020 | Dodge | Durango | Special Service |
| 2018-2021 | Dodge | Durango | SRT |
| 2022-2024 | Dodge | Durango | SRT 392 |
| 2023-2024 | Dodge | Durango | SRT 392 Plus |
| 2023-2024 | Dodge | Durango | SRT 392 Premium |
| 2018 | Dodge | Durango | SXT |
| 2016 | Jeep | Grand Cherokee | 75th Anniversary |
| 2021 | Jeep | Grand Cherokee | 80th Anniversary |
| 2018-2020 | Jeep | Grand Cherokee | Altitude |
| 2018-2021 | Jeep | Grand Cherokee | High Altitude |
| 2016-2020 | Jeep | Grand Cherokee | Laredo |
| 2021 | Jeep | Grand Cherokee | Laredo E |
| 2021 | Jeep | Grand Cherokee | Laredo X |
| 2016-2020 | Jeep | Grand Cherokee | Limited |
| 2019-2021 | Jeep | Grand Cherokee | Limited X |
| 2016-2020 | Jeep | Grand Cherokee | Overland |
| 2016-2020 | Jeep | Grand Cherokee | SRT |
| 2016-2020 | Jeep | Grand Cherokee | Summit |
| 2018-2021 | Jeep | Grand Cherokee | Trackhawk |
| 2017-2020 | Jeep | Grand Cherokee | Trailhawk |
| 2019-2020 | Jeep | Grand Cherokee | Upland |
| 2021 | Jeep | Grand Cherokee L | Altitude |
| 2021 | Jeep | Grand Cherokee L | Laredo |
| 2021 | Jeep | Grand Cherokee L | Limited |
| 2021 | Jeep | Grand Cherokee L | Overland |
| 2021 | Jeep | Grand Cherokee L | Summit |
| 2021 | Jeep | Grand Cherokee L | Summit Reserve |
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
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 2
Ehh
Pills up rather quickly
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Reviewed in the United States on June 7, 2026
★★★★★ 3
Nice but dissapointing
So it sometimes stays cool but if it’s under a blanket and you have your body on it at all it will get warm but the spots you don’t use will get cool sometimes. I am very disappointed in the material though because it’s like my dry skin scratched the pillow case all over which makes me question it and I don’t think I would buy again.
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Soft and smooth cover
Color: Grey, Size: Body（20"X 54"）
This is a nice pillow cover overall. The fabric feels good and it's comfortable to sleep on, especially compared to a more basic cotton cover. It is maybe a little thinner than I expected, so if you want something thick and heavy this probably isn't that. But for a soft smooth cover that fits and feels decent, I think it's worth it. No major complaints from me after using it.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
These are the ones you want
Color: Grey, Size: Body（20"X 54"）
May need to iron them out when wash/dried but my old ones still look new- soft, cooling, smooth, color is still great. Not itchy or cheap feeling. Buying a new set for family.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Very nice pillowcases
Color: Haze Blue, Size: 2 Pack Standard（20"X 26"）
Very pretty pillowcases. I washed them in cold water and dried them on low before using. They came out a little wrinkly but smoothed out on the pillow. The fabric is shiny and rich looking. It's not hot yet, here in Texas, but I am anticipating the coolness of these pillowcases to feel very nice. I appreciate the envelope closure. It gives it a finished look. There was no odd odor. They feel good like they'll last for a long time. I am a satisfied customer.
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Reviewed in the United States on April 8, 2026