Mishimoto Thermal Bypass Valve Kit

2016–2021 Jeep Grand Cherokee / 2021 Jeep Grand Cherokee L 3.0L, 5.7L, 6.4L

MMTC-WK2-TBV

Overview:

The Mishimoto Thermal Bypass Valve Kit is a critical upgrade for maintaining optimal transmission temperatures in your Jeep Grand Cherokee or Grand Cherokee L. Designed to replace the stock in-line thermal bypass valve, this kit ensures proper fluid flow to the transmission cooler once the fluid reaches operating temperature. By preventing premature or blocked fluid flow, it protects your transmission from overheating and potential damage caused by excessive heat buildup.

Ideal for owners of 2016–2021 Jeep Grand Cherokee models equipped with V8 or 3.0L EcoDiesel engines, this valve kit offers enhanced durability and improved cooling performance. Whether you drive in cold climates requiring fast warm-up or in extreme towing and off-road conditions demanding constant cooling, Mishimoto’s thermal bypass valve kit adapts to your needs with a fully serviceable thermostat and an optional bypass feature.

Key Features:

Engineered to outperform the factory valve, the Mishimoto Thermal Bypass Valve Kit delivers superior cooling efficiency and reliability through advanced design and materials. Key features include:

• Durable CNC-machined billet aluminum construction for long-lasting strength and corrosion resistance
• Fully serviceable thermostat that enables rapid transmission fluid warm-up in cold weather
• Optional thermostat bypass for continuous cooling during heavy towing or extreme driving conditions
• Strategically machined internal passages that improve fluid flow compared to the stock valve
• Integrated cooling fins machined into the valve body to enhance heat dissipation
• Black anodized finish providing a sleek appearance and additional surface protection
• Designed specifically for the 8HP transmission used in Jeep Grand Cherokee models
• Backed by the Mishimoto Lifetime Warranty for peace of mind

Construction & Design:

The Mishimoto Thermal Bypass Valve is crafted from high-quality billet aluminum, CNC-machined to precise tolerances for a perfect fit and superior durability. Its black anodized finish not only resists corrosion but also adds a refined look under the hood. The valve’s internal passages are carefully engineered to optimize fluid flow, reducing restrictions and improving cooling efficiency.

Cooling fins integrated into the valve body increase surface area, allowing heat to dissipate more effectively. The fully serviceable thermostat ensures reliable operation and easy maintenance, while the optional bypass feature provides flexibility for different driving environments and climates.

Installation & Fitment:

Installation of the Mishimoto Thermal Bypass Valve Kit is straightforward and can be completed in under one hour using basic hand tools. It is a direct replacement for the factory valve, requiring no modifications to your Jeep’s transmission cooling system. This kit fits a wide range of Jeep Grand Cherokee models from 2016 through 2021, including the Grand Cherokee L 2021 model.

Compatible models include:

• Jeep Grand Cherokee 75th Anniversary (2016)
• Jeep Grand Cherokee 80th Anniversary (2021)
• Jeep Grand Cherokee Altitude (2018–2020)
• Jeep Grand Cherokee High Altitude (2018–2021)
• Jeep Grand Cherokee Laredo (2016–2020)
• Jeep Grand Cherokee Laredo E (2021)
• Jeep Grand Cherokee Laredo X (2021)
• Jeep Grand Cherokee Limited (2016–2021)
• Jeep Grand Cherokee Limited X (2019–2020)
• Jeep Grand Cherokee Overland (2016–2021)
• Jeep Grand Cherokee SRT (2016–2021)
• Jeep Grand Cherokee Summit (2016–2021)
• Jeep Grand Cherokee Trackhawk (2018–2021)
• Jeep Grand Cherokee Trailhawk (2017–2021)
• Jeep Grand Cherokee Upland (2019–2020)
• 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)

What's Included:

• CNC-machined aluminum thermal bypass valve assembly
• Fully serviceable thermostat installed
• Thermostat bypass component for constant cooling option
• Installation hardware and instructions

Ideal For:

This thermal bypass valve kit is perfect for Jeep Grand Cherokee and Grand Cherokee L owners who demand reliable transmission cooling under all conditions. It is especially beneficial for those who tow heavy loads, engage in off-road driving, or live in regions with extreme temperature variations. By upgrading to Mishimoto’s valve, you ensure your transmission operates within safe temperature ranges, extending its lifespan and maintaining optimal performance.

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.