Mishimoto Transmission Cooler

Ram 2500 / 3500 13-14 6.7L Diesel

MMTC-RAM-13SL

Overview:

The Mishimoto Transmission Cooler for the 2013–2014 RAM 6.7L Cummins is engineered to protect your transmission from the damaging effects of excessive heat. Whether you use your RAM as a heavy-duty tow vehicle, a hardworking fleet truck, or a daily driver that occasionally hits the dragstrip, maintaining optimal transmission temperatures is critical for longevity and performance. This direct-fit cooler replaces the stock unit with a significantly upgraded design that enhances cooling efficiency and fluid capacity, ensuring your transmission stays cooler under demanding conditions.

Designed specifically for the 2013–2014 RAM 6.7L Cummins, this transmission cooler offers a seamless installation experience without the need for cutting or modifications. Backed by Mishimoto’s Lifetime Warranty with Accident Protection, it provides reliable, worry-free cooling for the life of your vehicle.

Key Features:

The Mishimoto transmission cooler incorporates advanced engineering to deliver superior cooling performance and durability. Key features include:

• Massive 82% greater core volume compared to the stock cooler for enhanced heat dissipation
• 112% increase in fin area to maximize airflow and cooling surface
• 1.34-quart fluid capacity to improve heat absorption and reduce transmission temperatures
• Tube-and-fin core design with internal fins that increase fluid contact with cooling surfaces
• Direct-fit design for the 2013–2014 RAM 6.7L Cummins, requiring no cutting or modifications
• Durable construction to withstand harsh operating environments and heavy-duty use
• Backed by Mishimoto’s Lifetime Warranty with Accident Protection for peace of mind

Construction & Design:

The cooler features a robust tube-and-fin core with internal fins inside the tubes, which not only increases the total cooling surface area but also ensures more transmission fluid contacts the cooling surfaces for improved heat transfer. This design balances fluid flow with maximum cooling efficiency, preventing overheating during heavy towing or high-performance driving. The cooler’s construction uses high-quality materials engineered to resist corrosion and damage from road debris, ensuring long-lasting durability and consistent performance.

Installation & Fitment:

Installation of the Mishimoto transmission cooler is straightforward and designed to be a direct replacement for the factory unit on 2013–2014 RAM 6.7L Cummins trucks. No cutting, drilling, or other modifications are necessary, making it an ideal upgrade for both professional installers and DIY enthusiasts. The cooler fits perfectly within the existing mounting points and connects seamlessly with the stock transmission lines, minimizing installation time and effort.

What's Included:

• Mishimoto direct-fit transmission cooler core
• All necessary mounting hardware
• Installation instructions

Ideal For:

This transmission cooler is perfect for RAM 6.7L Cummins owners who demand reliable transmission cooling under heavy loads or high-stress conditions. It is especially beneficial for:

• Towing enthusiasts who regularly haul heavy trailers or equipment
• Fleet operators seeking to extend transmission life and reduce maintenance costs
• Performance drivers who push their trucks on the dragstrip or off-road
• Daily drivers looking for enhanced transmission protection and peace of mind

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.