Mishimoto Transmission Thermal Bypass Valve Kit

2012–2021 Chrysler 300 / Dodge Challenger / Dodge Charger 3.6L V6

Part #: MMTC-GMP-TBV

Overview

The Mishimoto Transmission Thermal Bypass Valve Kit is a precision-engineered upgrade designed specifically for 2012 to 2021 Chrysler 300, Dodge Challenger, and Dodge Charger models equipped with the 3.6L V6 engine. This kit addresses a common failure point in the factory transmission cooling system—the thermal bypass valve—which is prone to sticking closed and causing transmission overheating. By replacing the stock valve with a durable billet aluminum unit, Mishimoto ensures reliable temperature regulation and improved transmission longevity.

Ideal for both daily drivers and performance enthusiasts, this valve kit enhances cooling control under a variety of driving conditions. Whether you are towing, driving in hot climates, or pushing your vehicle hard on the street or track, this upgrade helps maintain optimal transmission temperatures, reducing the risk of overheating and costly transmission damage.

Key Features

Engineered to outperform the factory thermal bypass valve, the Mishimoto kit offers several advanced features that improve reliability and cooling efficiency:

• CNC-machined billet aluminum construction for superior strength and long-lasting durability
• Integrated heat sink design to actively dissipate heat and improve thermal management
• Fully serviceable thermostat calibrated to open at the stock temperature of 160°F (71°C)
• Thermostat can be swapped with other Mishimoto thermostats to customize opening temperatures
• Includes a bypass valve option for constant fluid flow, ideal for extreme driving or hot climates
• Improved fluid flow compared to the factory valve, reducing transmission heat buildup
• Direct-fit design connects seamlessly to all OEM transmission cooler lines without modifications
• Durable black anodized finish resists corrosion and adds a sleek under-hood appearance
• Backed by the Mishimoto Lifetime Warranty for peace of mind and long-term reliability

Construction & Design

The valve body is precision CNC-machined from billet aluminum, providing exceptional durability and resistance to wear. Its integrated heat sink design enhances heat dissipation, improving the cooling efficiency of the transmission fluid beyond what the stock valve can achieve. The black anodized finish not only protects against corrosion but also delivers a clean, performance-oriented look under the hood. The included thermostat is fully serviceable, allowing for easy maintenance or customization to suit specific cooling needs.

Installation & Fitment

Installation of the Mishimoto Transmission Thermal Bypass Valve Kit is straightforward and can typically be completed within one hour using basic hand tools. Designed as a direct replacement for the factory thermal bypass valve, it connects directly to all OEM transmission cooler lines without requiring any additional modifications or adapters. This ensures a hassle-free upgrade experience for both professional technicians and knowledgeable enthusiasts.

This kit fits 2012 through 2021 Chrysler 300, Dodge Challenger, and Dodge Charger models equipped with the 3.6L V6 engine, including base, S, R/T, Scat Pack, SRT, and other trims as specified by the manufacturer.

What's Included

• CNC-machined billet aluminum thermal bypass valve body with heat sink design
• Fully serviceable thermostat calibrated to open at 160°F (71°C)
• Thermostat bypass valve for constant fluid flow option
• All necessary seals and hardware for installation
• Detailed installation instructions

Ideal For

This transmission thermal bypass valve kit is perfect for Mopar owners seeking to improve transmission cooling reliability and performance. It is especially beneficial for:

• Drivers in hot climates or those who frequently tow or haul heavy loads
• Performance enthusiasts who push their vehicles hard on the street or track
• Owners looking to replace the factory valve prone to failure and overheating issues
• Anyone wanting a durable, long-lasting upgrade backed by a lifetime warranty

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.