Mishimoto Plastic Replacement Radiator

2012–2018 Jeep Wrangler JK 3.6L V6

Part #: R2957-MT

Overview

The Mishimoto Plastic Replacement Radiator is a direct OEM replacement designed specifically for the Jeep Wrangler JK models from 2012 to 2018 equipped with the 3.6L V6 engine. This radiator restores your vehicle’s cooling system to optimal condition, making it an excellent solution for owners experiencing leaks, clogs, or damage to their original radiator. Engineered for a perfect fit and reliable performance, it requires no modifications, ensuring a hassle-free installation.

Whether your Jeep is used for daily driving, off-road excursions, or demanding applications, this radiator maintains factory cooling efficiency while offering enhanced durability. Backed by Mishimoto’s industry-leading Lifetime Warranty, it provides long-lasting peace of mind and quality construction.

Key Features

Built to meet or exceed OEM specifications, the Mishimoto Plastic Replacement Radiator combines premium materials with precise engineering to deliver dependable cooling performance. Key features include:

• Direct fit replacement for 2012–2018 Jeep Wrangler JK 3.6L V6 models
• OEM specification plastic end tanks paired with a high-quality aluminum core
• Compatible with both manual and automatic transmissions
• No bending, cutting, or modifications required for installation
• Maintains stock cooling efficiency for reliable engine temperature management
• Resistant to leaks, clogs, and plastic tank cracking common in aging radiators
• Engineered to work seamlessly with all original engine bay components
• Backed by Mishimoto’s Lifetime Warranty for long-term assurance

Construction & Design

This radiator features durable plastic end tanks molded precisely to OEM specifications, ensuring a secure fit and reliable sealing. The core is constructed from high-grade aluminum, which provides excellent heat dissipation and corrosion resistance. This combination offers a lightweight yet robust design suitable for both stock and lightly modified Jeep Wranglers.

The plastic tanks are engineered to withstand years of clamp pressure and thermal cycling, significantly reducing the risk of cracks and leaks that commonly affect original equipment radiators. The aluminum core’s optimized fin density and tube design enhance coolant flow and heat transfer, helping maintain stable engine operating temperatures under various driving conditions.

Installation & Fitment

Installation is straightforward and designed as a direct swap for the factory radiator. No bending, cutting, or modifications are necessary, making it an ideal choice for both DIY enthusiasts and professional mechanics. This radiator fits all 2012–2018 Jeep Wrangler JK models equipped with the 3.6L V6 engine, including popular trims such as Rubicon, Sahara, Sport, and special editions.

It supports multiple transmission configurations and integrates flawlessly with all stock engine bay equipment, ensuring seamless installation and reliable cooling performance.

What's Included

• Mishimoto Plastic Replacement Radiator for Jeep Wrangler JK (2012–2018)
• Pre-installed plastic end tanks and aluminum core assembly
• Lifetime Warranty documentation

Ideal For

This radiator is perfect for Jeep Wrangler JK owners who need a dependable replacement for an aging, leaking, or clogged stock radiator. It is well-suited for daily drivers, off-road enthusiasts, and anyone seeking to maintain factory-level cooling performance without the hassle of custom modifications. Its direct-fit design and durable construction make it an excellent choice for restoring your Jeep’s cooling system to peak condition.

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.