


Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve Kit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve KitThe transmission in your 2012 2018 Jeep Wrangler JK is the heart of its drivetrain. Whether you're hauling groceries or hitting the trail, it's vital to keep it performing at its best, and keeping the transmission fluid cool is crucial to that goal. In an attempt to balance driveability and the health of your transmission, Jeep fitted a thermostatic bypass valve to the lines that feed the transmission cooler. This valve ensures fluid doesn't flow
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- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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★★★★★ 5
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Special Size Type: Quarter Zip, Size: Medium, Color: Slate Grey, Special Size Type: Quarter Zip, Size: Medium, Color: Slate Grey
Fits great. Nice material. Medium
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Wonderful!
Special Size Type: Quarter Zip, Size: Small, Color: Taupe
Wonderful soft fabric. Not too thick, not too thin - just right! Love the taupe color. I usually wear a small, but needed to size up to medium for the shoulders to have a bit more room to move when I run.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Pretty in Pink!
Special Size Type: Full Zip, Size: Large, Color: Flamingo Pink
I wear this jacket almost every day! The color is a pretty bubblegum pink and is just as shown in the ad. Being high quality, it does not fade nor bleed when you wash it, it is true to size but does have stretch for comfort. You can put this in the dryer and it does not shrink! The pockets are a decent size and have zippers to keep your items safe. It is thick enough to keep you warm but not too thick to where you will overheat. Perfect for a breezy day!
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Reviewed in the United States on September 9, 2025
★★★★★ 5
Great find
Size: Large, Color: Black
Great fit and length. As well as quality fabric. Cute and comfy.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Super comfy and practical
Size: XX-Large, Color: Emerald Green
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