Thermal Bypass Valve

The transmission in your 2012-2023 Dodge Charger, Challenger, or Chrysler 300 is the heart of its drivetrain. Whether you're hauling groceries or knocking out highway miles, 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 drivability and the health of your transmission, Dodge/Chrysler fitted a thermostatic bypass valve to the lines that feed the transmission cooler. This valve ensures fluid doesn't flow through the cooler before the transmission reaches operating temperature, preventing overcooling in cold environments. However, when the thermostat in this valve fails, it's almost a guarantee your transmission will overheat. Moreover, those who live in hot climates will likely never have to worry about overcooling, rendering the valve a useless flow restriction. That's why Mishimoto has developed a full-flow thermostatic bypass valve for the 2012-2023 Dodge Charger, Challenger, or Chrysler 300. The Mishimoto thermal bypass valve kit includes an all-aluminum CNC-machined housing that replaces the stock unit. This full-flow valve allows fluid to pump through the cooler as soon as the vehicle is started, eliminating the potential failure point of the stock bypass and providing cooling benefits. The full-flow design is beneficial to vehicles operating in hot climates, extreme driving conditions, or towing heavy loads. As with Mishimoto products, this Full-Flow Transmission Thermal Bypass Valve Kit includes our signature Lifetime Warranty.

Additional Information

Automatic transmission oil cooler designed to regulate fluid temperature and prevent overheating. Enhances transmission longevity, maintains performance, and features durable construction with a precise fit.

Part Type

Automatic Transmission Oil Cooler

Product Overview

The transmission in your 2012-2021 Dodge Charger, Challenger, or Chrysler 300 is the heart of its drivetrain. Whether you're hauling groceries or knocking out highway miles, 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 drivability and the health of your transmission, Dodge/Chrysler fitted a thermostatic bypass valve to the lines that feed the transmission cooler. This valve ensures fluid doesn't flow through the cooler before the transmission reaches operating temperature, preventing overcooling in cold environments. However, when the thermostat in this valve fails, it's almost a guarantee your transmission will overheat. Moreover, those who live in hot climates will likely never have to worry about overcooling, rendering the valve a useless flow restriction. That's why Mishimoto has developed a full-flow thermostatic bypass valve for the 2012-2021 Dodge Charger, Challenger, or Chrysler 300. The Mishimoto thermal bypass valve kit includes an all-aluminum CNC-machined housing that replaces the stock unit. This full-flow valve allows fluid to pump through the cooler as soon as the vehicle is started, eliminating the potential failure point of the stock bypass and providing cooling benefits. The full-flow design is beneficial to vehicles operating in hot climates, extreme driving conditions, or towing heavy loads. As with Mishimoto products, this Full-Flow Transmission Thermal Bypass Valve Kit includes our signature Lifetime Warranty.

• Direct-fit for 2012-2023 Dodge Charger/Challenger, Chrysler 300 w/8HP45 or 845RE transmission
• Eliminates failure-prone bypass valve
• Installs in less than 1 hour

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Product Details

Reference Information

Automatic Transmission Cooler Bypass Delete Kits, Non-Thermostatic, Full-Flow, Aluminum, Anodized, Chrysler, Dodge, 8HP45, 845RE, Each

Mishimoto thermal bypass valve kits improve upon the failings of stock models that can cause your transmission to overheat. Crafted from CNC-machined billet aluminum, the valves look better and perform better with a fully serviceable 160 degree F thermostat for fast warm-up in cold climates and a thermostat bypass for constant cooling in hot climates. They deliver increased flow over stock models and feature machined cooling fins for added heat dissipation and a durable anodized finish. These thermal bypass valve kits are backed by Mishimoto's Lifetime Warranty.