Mishimoto Full-Flow Thermal Bypass Valve Kit Aluminum

2012–2023 Chrysler 300 / Dodge Charger / Dodge Challenger 3.6L V6, 2021–2024 Ram 1500 6.2L TRX

Part #: MMTC-GMP-TBVFF

Overview

The Mishimoto Full-Flow Thermal Bypass Valve Kit is a high-quality, direct replacement for the factory thermostatic bypass valve found on transmission cooler lines of select Chrysler 300, Dodge Charger, Dodge Challenger, and Ram 1500 models. Designed specifically for vehicles equipped with the 3.6L V6 engine and 8HP45/845RE transmissions from 2012 to 2023, as well as the Ram 1500 6.2L TRX from 2021 to 2024, this valve kit enhances transmission cooling efficiency and reliability.

By eliminating the common failure point of the stock valve, the Mishimoto full-flow valve ensures continuous transmission fluid circulation through the cooler immediately upon startup. This upgrade is ideal for both enthusiasts and daily drivers who want to reduce the risk of transmission overheating, especially in demanding conditions such as hot climates, towing, or spirited driving.

Key Features

Engineered to improve transmission cooling performance and durability, the Mishimoto Full-Flow Thermal Bypass Valve Kit offers the following benefits:

• Direct-fit replacement for 2012–2023 Chrysler 300, Dodge Charger, Dodge Challenger with 3.6L V6 and 8HP45 or 845RE transmissions
• Compatible with 2021–2024 Ram 1500 6.2L TRX models
• Full-flow design allows uninterrupted transmission fluid circulation through the cooler, eliminating flow restrictions caused by the factory valve
• Prevents transmission overheating by removing the failure-prone thermostatic bypass valve mechanism
• Improves transmission fluid temperature management during towing, aggressive driving, and in hot climates
• Constructed from CNC-machined aluminum for enhanced strength and corrosion resistance
• Simple installation requiring less than one hour with no vehicle modifications needed
• Backed by Mishimoto’s industry-leading Lifetime Warranty for long-term peace of mind

Construction & Design

The valve housing is precision CNC-machined from high-quality aluminum, providing superior durability and corrosion resistance compared to the stock plastic valve. This robust construction ensures reliable operation even under extreme conditions, such as high temperatures and heavy-duty use.

The full-flow design eliminates the restrictive thermostat mechanism found in the factory valve, allowing continuous transmission fluid flow to the cooler from engine startup. This design not only prevents valve failure but also maintains consistent transmission operating temperatures, enhancing transmission reliability and longevity.

Installation & Fitment

The Mishimoto Full-Flow Thermal Bypass Valve Kit is a direct bolt-on replacement for the factory valve on 2012–2023 Chrysler 300, Dodge Charger, and Dodge Challenger models equipped with the 3.6L V6 and 8HP45 or 845RE transmissions, as well as 2021–2024 Ram 1500 6.2L TRX trucks. Installation is straightforward and typically completed in under one hour using basic hand tools. No modifications or additional components are required, making this an accessible upgrade for both professional installers and experienced enthusiasts.

What's Included

• Full-flow thermal bypass valve housing (CNC-machined aluminum)
• All necessary seals and fittings for direct replacement
• Detailed installation instructions

Ideal For

This valve kit is perfect for owners of Chrysler 300, Dodge Charger, Dodge Challenger, and Ram 1500 vehicles who want to improve transmission cooling reliability and performance. It is especially beneficial for drivers in hot climates, those who tow heavy loads, or enthusiasts who engage in aggressive driving where transmission temperatures can rise rapidly. By eliminating the stock valve’s failure-prone thermostat, this upgrade helps maintain optimal transmission fluid temperatures and extends transmission life.

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.