Mishimoto Performance Transmission Cooler: Jeep Wrangler (18-22) / Gladiator (20-22)

Mishimoto Performance Transmission Cooler

2018–2022 Jeep Wrangler / 2020–2022 Jeep Gladiator

MMTC-JL-18SL

Overview:

The Mishimoto Performance Transmission Cooler is engineered specifically for the 2018 to 2022 Jeep Wrangler and 2020 to 2022 Jeep Gladiator models. Designed to enhance the cooling efficiency of the factory ZF 8-speed transmission, this cooler addresses the common issue of overheating caused by the stock transmission cooler’s limited airflow and compact cooling surface. Whether you’re navigating rugged off-road trails or cruising on the highway, maintaining optimal transmission temperature is critical for reliable performance and drivetrain longevity.

By significantly increasing cooling capacity, the Mishimoto cooler ensures your transmission fluid stays at safe operating temperatures, reducing wear and preventing costly transmission damage. This upgrade is ideal for Jeep enthusiasts who demand more from their vehicles in extreme conditions or heavy-duty use.

Key Features:

Designed with advanced cooling technology, the Mishimoto Performance Transmission Cooler offers substantial improvements over the stock unit:

• 195% increase in internal fin surface area for superior heat dissipation
• 93% larger external tube area to maximize airflow contact
• 32% increase in external fin area to enhance cooling efficiency
• 83% greater fluid capacity to maintain cooler transmission fluid under low airflow conditions
• Unique internal tube fins that increase fluid contact with cooling surfaces
• Custom fitment tailored for Jeep Wrangler JL and Gladiator models for seamless installation
• Durable construction designed to withstand harsh off-road environments
• Backed by Mishimoto’s Lifetime Warranty for long-term peace of mind

Construction & Design:

The Mishimoto transmission cooler is crafted from high-quality aluminum, chosen for its excellent thermal conductivity and corrosion resistance. The design incorporates a larger core with expanded tube and fin areas, allowing more air to pass through and absorb heat efficiently. Internal fins within the tubes increase the surface area in contact with transmission fluid, optimizing heat transfer. This robust construction ensures the cooler performs reliably in demanding conditions, from slow crawling on rocky trails to high-speed highway driving.

Installation & Fitment:

Installation of the Mishimoto Performance Transmission Cooler is straightforward and requires no permanent modifications to your Jeep Wrangler or Gladiator. The cooler is a direct-fit replacement for the factory unit, utilizing existing mounting points and transmission lines. This plug-and-play design allows for a hassle-free upgrade that can be completed with basic hand tools. Detailed instructions are included to guide you through the process, ensuring a secure and leak-free installation.

What's Included:

• Mishimoto Performance Transmission Cooler core
• Mounting hardware and brackets
• Installation instructions

Ideal For:

This transmission cooler is perfect for Jeep Wrangler and Gladiator owners who frequently tow, haul, or drive in extreme conditions such as off-road trails, desert heat, or mountainous terrain. It is also an excellent upgrade for daily drivers seeking enhanced transmission protection and longevity. Whether you’re a weekend adventurer or a serious off-road enthusiast, this cooler helps maintain optimal transmission temperatures for improved reliability and peace of mind.