Mishimoto Transmission Cooler

2010–2013 Dodge Ram 2500 / Ram 3500 6.7L Cummins

Part #: MMTC-RAM-10

Overview

The Mishimoto Transmission Cooler is a direct-fit upgrade designed specifically for Dodge Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine from 2010 through 2013. Engineered to meet the demands of heavy towing, hauling, and off-road use, this cooler effectively manages transmission fluid temperatures to prevent overheating and premature wear. By maintaining optimal transmission temperatures, it helps extend the life of your transmission and ensures consistent performance under strenuous conditions.

Ideal for truck owners who regularly tow heavy trailers or operate in hot climates, the Mishimoto Transmission Cooler delivers reliable cooling capacity that supports long hauls and heavy-duty workloads. Its robust design and direct-fit installation make it a practical and durable solution for enhancing your Ram’s transmission cooling system.

Key Features

Built with advanced engineering to outperform factory coolers, the Mishimoto Transmission Cooler offers significant improvements in cooling efficiency and durability:

• 60% increase in core volume compared to the OEM cooler, providing greater fluid capacity for improved heat absorption
• 86% increase in external fin surface area to maximize heat dissipation and maintain lower fluid temperatures
• Optimized tube and fin construction for rapid heat transfer and enhanced durability under heavy load conditions
• Direct-fit design ensures seamless integration with factory mounting points and connections, requiring no modifications
• Compatible with both stock and Mishimoto transmission coolers, allowing flexible cooling system configurations
• Optional line kit available to bypass the factory transmission cooler and integrated A/C condenser, reducing contamination risk from transmission failures
• Constructed to withstand frequent temperature fluctuations and the rigors of heavy towing and hauling

Construction & Design

The Mishimoto Transmission Cooler features a rugged tube and fin design crafted from high-quality aluminum, known for excellent thermal conductivity and corrosion resistance. Its expanded core volume and increased fin density enable superior heat exchange, ensuring transmission fluid stays cooler even under extreme operating conditions. The cooler’s durable construction is engineered to endure the harsh environments and heavy-duty use typical of Dodge Ram trucks engaged in towing and off-road activities.

Installation & Fitment

This transmission cooler is a direct-fit replacement for 2010–2013 Dodge Ram 2500 and 3500 models equipped with the 6.7L Cummins engine. Installation is straightforward, utilizing existing factory brackets and connections without the need for modifications. Both professional installers and experienced DIY enthusiasts will find the upgrade simple and efficient. For enhanced protection, the optional line kit allows bypassing the factory cooler and integrated A/C condenser, minimizing the risk of contamination and improving overall system reliability.

What's Included

• Mishimoto transmission cooler core
• Mounting hardware for direct-fit installation
• Installation instructions

Ideal For

This transmission cooler is perfect for Dodge Ram 2500 and 3500 owners who demand reliable transmission cooling during heavy towing, hauling, or off-road use. It is especially beneficial for those operating in hot climates or under conditions that place extra stress on the transmission system. Whether your Ram is a workhorse or a weekend warrior, this cooler helps maintain transmission health and performance over the long haul.

Fitment Summary

• 2010 Dodge Ram 2500 Laramie, Power Wagon, SLT, ST, SXT, TRX
• 2010 Dodge Ram 3500 Laramie, SLT, ST
• 2011–2013 Ram 2500 Big Horn, Laramie, Laramie Longhorn, Lone Star, Outdoorsman, Power Wagon, SLT, ST, Tradesman
• 2011–2013 Ram 3500 Big Horn, Laramie, Laramie Longhorn, Lone Star, SLT, ST

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.