Mishimoto Transmission Cooler Kit

2007–2011 Jeep Wrangler JK 3.8L 42RLE

MMTC-WRA-07BK

Overview:

The Mishimoto Black Transmission Cooler Kit is a direct-fit cooling solution designed specifically for Jeep Wrangler JK models from 2007 to 2011 equipped with the 3.8L engine and 42RLE transmission. Known for experiencing elevated transmission fluid temperatures during demanding off-road conditions or in hot climates, the Jeep JK benefits greatly from this upgrade. By significantly reducing transmission fluid temperatures, this kit helps prevent premature transmission wear and enhances overall vehicle reliability and safety.

Engineered with precision brackets and a large 19-row bar-and-plate cooler, this kit mounts neatly in the front grille area to maximize airflow and cooling efficiency. It is an ideal addition for Jeep owners looking to improve transmission durability, especially those who frequently tow, haul, or tackle challenging terrain.

Key Features:

This transmission cooler kit offers a range of features designed to optimize cooling performance and ease of installation:

• Direct-fit design tailored for Jeep Wrangler JK 2007–2011 models
• Large 19-row bar-and-plate cooler for superior heat dissipation
• Precision-engineered mounting brackets for secure and straightforward installation
• Significantly reduces transmission fluid temperatures to minimize wear and extend transmission life
• Includes all necessary lines and hardware for a complete installation
• Black finish for a sleek, durable appearance that complements Jeep styling
• 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 Mishimoto Transmission Cooler Kit is constructed from high-quality aluminum, chosen for its excellent thermal conductivity and corrosion resistance. The 19-row bar-and-plate cooler design maximizes surface area to efficiently dissipate heat from the transmission fluid. The cooler’s black powder-coated finish not only enhances durability against environmental elements but also provides a clean, factory-inspired look.

Mounting brackets are precision-engineered to fit the Jeep JK chassis perfectly, ensuring a secure fit without the need for modifications. The cooler is strategically positioned in the front grille area to take advantage of maximum airflow, which is critical for maintaining optimal transmission temperatures during heavy use.

Installation & Fitment:

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

The 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 drive in hot climates, tow trailers, or engage in off-road activities that place extra strain on the transmission. It is also a smart upgrade for anyone looking to extend the life of their transmission by maintaining lower fluid temperatures under demanding conditions. When paired with Mishimoto’s oil cooler kit and all-aluminum radiator, it provides a comprehensive cooling solution for enhanced drivetrain reliability.

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.