Mishimoto Transmission Cooler for Jeep Grand Cherokee 8HP Thermal Bypass Valve

Mishimoto Transmission Cooler Full-Flow Thermal Bypass Valve for Jeep Grand Cherokee (8HP) Protect your 2016–2020 Jeep Grand Cherokee transmission from overheating with the Mishimoto full-flow thermal bypass valve designed specifically for the 8HP transmission. Built to replace the fragile factory in-line thermostat, this upgrade ensures consistent fluid flow to the transmission cooler from the moment you start the vehicle. Key Benefits Full-flow design: Allows transmission fluid to circulate through the cooler immediately, reducing peak operating temperatures. Durable construction: All-aluminum, CNC-machined housing resists corrosion and withstands high-heat conditions. Improved reliability: Eliminates the common failure point of the stock thermal bypass valve. Better for demanding use: Ideal for towing, hauling, hot climates, and aggressive driving. Lifetime Warranty: Backed by Mishimoto’s signature warranty for long-term peace of mind. Why Upgrade? The Grand Cherokee’s transmission transfers substantial torque from V8 and 3.0L EcoDiesel engines—generating heat that can damage internal components if not properly cooled. The stock thermostat can fail and block flow to the cooler, risking overheating. The Mishimoto full-flow valve prevents that scenario by ensuring uninterrupted cooling and extending transmission life. Fitment & Compatibility Direct fit for 2016–2020 Jeep Grand Cherokee models equipped with the 8HP transmission. Simple replacement of the factory bypass valve—no extensive modifications required.