Mishimoto Racing Thermostat: Dodge Durango (11-15) / Jeep Grand Cherokee (11-15) / Jeep Wrangler (12-18) / Wrangler JK (18)

Mishimoto Racing Thermostat

2011–2018 Dodge Durango / Jeep Grand Cherokee / Jeep Wrangler 3.6L Pentastar

MMTS-WRA-12

Overview:

The Mishimoto Racing Thermostat is a precision-engineered cooling system upgrade designed specifically for Dodge Durango, Jeep Grand Cherokee, and Jeep Wrangler models equipped with the 3.6L Pentastar engine from 2011 through 2018. This thermostat is ideal for enthusiasts and off-road drivers who demand superior temperature control under extreme conditions such as rock crawling, towing, or driving in hot climates.

By replacing the factory thermostat with Mishimoto’s low-temperature racing thermostat, your engine coolant begins circulating earlier, reducing overall engine temperatures and helping to prevent overheating and potential internal damage. This upgrade is essential for maintaining optimal engine performance and longevity when pushing your vehicle beyond typical driving scenarios.

Key Features:

Engineered for reliability and performance, the Mishimoto Racing Thermostat offers the following benefits:

• Opens at 180°F, significantly lower than the stock thermostat’s 203°F, allowing earlier coolant flow
• Reduces and maintains lower engine coolant temperatures for improved thermal management
• Ideal for warm climates, heavy towing, and extreme off-road driving conditions
• Constructed with high-quality wax for consistent, repeatable operation
• Direct fit replacement for a wide range of Dodge Durango, Jeep Grand Cherokee, and Jeep Wrangler models
• Helps protect the Pentastar engine from overheating and related internal damage
• Backed by Mishimoto’s Lifetime Warranty, ensuring long-term durability and craftsmanship

Construction & Design:

The Mishimoto Racing Thermostat is built with premium materials and precision engineering to deliver dependable performance. The core component features a high-quality wax pellet that expands and contracts reliably to regulate coolant flow at the precise temperature threshold. This ensures consistent thermostat operation over the life of the vehicle, even under demanding conditions.

Its robust design withstands thermal cycling and harsh environments typical of off-road and towing applications. The thermostat housing and seals are manufactured to OEM specifications, guaranteeing a perfect fit and leak-free installation.

Installation & Fitment:

Installation of the Mishimoto Racing Thermostat is straightforward and designed as a direct replacement for the factory unit. No modifications or special tools are required, making it accessible for professional mechanics and experienced DIY enthusiasts alike. Proper coolant system bleeding after installation is recommended to ensure optimal performance.

This thermostat fits the following vehicles equipped with the 3.6L Pentastar engine:

• Dodge Durango (2011–2015) – Citadel, Crew, Express, Heat, Limited, R/T, Rallye, Special Service, SXT trims
• Jeep Grand Cherokee (2011–2015) – Laredo, Limited, Overland, Overland Summit, SRT, SRT8, Summit trims
• Jeep Wrangler (2012–2018) – Rubicon, Sahara, Sport, Sport S, 75th Anniversary, Unlimited variants
• Jeep Wrangler JK (2018) – Rubicon, Sahara, Sport, Sport S, Unlimited Rubicon, Unlimited Sahara, Unlimited Sport, Unlimited Sport S

What's Included:

• Mishimoto Racing Thermostat (opens at 180°F)
• OEM-quality gasket or seal
• Installation instructions

Ideal For:

This thermostat is perfect for Jeep and Dodge owners who frequently operate their vehicles in demanding environments, including:

• Off-road enthusiasts tackling rock crawling and trail driving
• Drivers in hot climates seeking improved engine cooling
• Towing heavy loads where engine temperatures tend to rise
• Anyone looking to enhance engine reliability and prevent overheating