Mishimoto Transmission Cooler Kit

2007–2011 Jeep Wrangler JK 3.8L V6

Part #: MMTC-WRA-07BK

Overview

The Mishimoto Transmission Cooler Kit is a precision-engineered cooling solution designed specifically for Jeep Wrangler JK models from 2007 to 2011 equipped with the 3.8L V6 engine and 42RLE transmission. This kit addresses the common issue of elevated transmission fluid temperatures experienced during heavy towing, off-road driving, or operation in hot climates. By effectively reducing transmission fluid temperatures, it helps prevent premature transmission wear, improves reliability, and enhances overall vehicle safety.

Ideal for Jeep owners who demand durability and performance from their drivetrain, this cooler kit ensures your transmission stays within optimal temperature ranges even under the most challenging conditions. It is a smart upgrade for anyone looking to extend the life of their transmission and maintain smooth shifting performance.

Key Features

Engineered to deliver superior cooling performance and ease of installation, the Mishimoto Transmission Cooler Kit offers the following key features:

• Direct-fit design tailored specifically for 2007–2011 Jeep Wrangler JK 3.8L V6 models
• Large 19-row bar-and-plate cooler for maximum heat dissipation and efficient fluid cooling
• Precision-engineered mounting brackets for secure, no-modification installation in the front grille area
• Significantly reduces transmission fluid temperatures to minimize wear and extend transmission life
• Includes all necessary transmission lines and hardware for a complete, hassle-free installation
• Durable black powder-coated finish that complements Jeep styling and resists corrosion
• Compatible with Mishimoto Jeep JK oil cooler kit and all-aluminum radiator for comprehensive cooling upgrades
• Backed by Mishimoto’s lifetime warranty for long-term peace of mind

Construction & Design

The cooler is constructed from high-quality aluminum, prized for its excellent thermal conductivity and resistance to corrosion. The 19-row bar-and-plate design maximizes surface area, allowing for efficient heat transfer and rapid cooling of transmission fluid. The black powder-coated finish not only enhances durability against environmental elements but also provides a sleek, factory-inspired appearance that integrates seamlessly with the Jeep’s front grille.

Mounting brackets are precision-engineered to fit the Jeep Wrangler JK chassis perfectly, ensuring a secure and stable installation without the need for cutting, drilling, or other modifications. Positioned strategically in the front grille area, the cooler benefits from maximum airflow, which is critical for maintaining optimal transmission temperatures during heavy-duty use.

Installation & Fitment

Installation is straightforward thanks to the kit’s direct-fit design and inclusion of all necessary hardware and transmission lines. The cooler mounts securely in the front grille area using the supplied brackets, requiring no vehicle modifications. This ensures a clean, professional installation that preserves the integrity of your Jeep.

This transmission cooler kit is compatible with the following Jeep Wrangler JK models:

• Jeep Wrangler 70th Anniversary (2011)
• Jeep Wrangler Rubicon (2007–2011)
• Jeep Wrangler Sahara (2007–2011)
• Jeep Wrangler Sport (2010–2011)
• Jeep Wrangler Unlimited 70th Anniversary (2011)
• Jeep Wrangler Unlimited Rubicon (2007–2011)
• Jeep Wrangler Unlimited Sahara (2007–2011)
• Jeep Wrangler Unlimited Sport (2010–2011)
• Jeep Wrangler Unlimited X (2007–2010)
• Jeep Wrangler X (2007–2010)

What's Included

• 19-row bar-and-plate transmission cooler
• Precision mounting brackets
• All necessary transmission lines
• Installation hardware
• Detailed installation instructions

Ideal For

This transmission cooler kit is ideal for Jeep Wrangler JK owners who frequently tow trailers, haul heavy loads, or engage in off-road activities that place additional strain on the transmission. It is also an excellent upgrade for drivers operating in hot climates where transmission fluid temperatures tend to rise quickly. When combined with Mishimoto’s Jeep JK oil cooler kit and all-aluminum radiator, it forms a comprehensive cooling system that enhances drivetrain reliability and longevity under demanding conditions.

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.