Mishimoto Thermostat Aluminum Housing

2011–2015 Dodge Durango 3.6L V6, 2011–2015 Jeep Grand Cherokee 3.6L V6, 2012–2018 Jeep Wrangler 3.6L V6, 2014–2018 Jeep Grand Cherokee 3.0L EcoDiesel

Part #: MMTS-WRA-12E

Overview

The Mishimoto Thermostat with Aluminum Housing is a high-quality cooling system upgrade engineered to maintain optimal engine temperature for select Dodge Durango, Jeep Grand Cherokee, and Jeep Wrangler models equipped with 3.6L V6 and 3.0L EcoDiesel engines. Designed to open at approximately 90°C, this thermostat ensures consistent coolant flow, preventing overheating and promoting engine longevity under a variety of driving conditions.

Ideal for drivers who demand reliable performance and durability, this thermostat serves as a direct-fit replacement that preserves factory temperature settings for proper engine operation. Whether navigating rugged off-road trails or handling daily commutes, maintaining stable engine temperatures is essential for maximizing efficiency and protecting your vehicle’s powertrain.

With Mishimoto’s commitment to quality and precision engineering, this thermostat upgrade offers peace of mind through enhanced cooling system reliability and long-term durability.

Key Features

Built with advanced materials and designed for precise thermal control, the Mishimoto Thermostat Aluminum Housing delivers superior performance and reliability:

• Opens at approximately 90°C to match near-stock temperature for optimal engine temperature regulation
• Durable aluminum housing resists corrosion and improves heat dissipation compared to standard plastic housings
• Includes a galvanized steel bleeder screw for a tighter seal and easier bleeding of air from the cooling system
• Precision-engineered valve ensures smooth, consistent operation under all driving conditions
• Direct-fit design for 2011–2018 Jeep Wrangler, 2011–2015 Dodge Durango, and Jeep Grand Cherokee models requiring no modifications
• Compatible with OEM cooling system components for seamless integration
• Helps prevent overheating and engine damage by maintaining stable operating temperatures
• Backed by Mishimoto’s Lifetime Warranty, reflecting confidence in long-term durability and performance

Construction & Design

This thermostat features a rugged aluminum housing that offers superior strength and thermal conductivity compared to traditional plastic housings. The aluminum construction reduces the risk of cracks, leaks, and warping caused by prolonged exposure to high temperatures and harsh environments, while also enhancing heat dissipation for improved cooling system efficiency.

The valve mechanism is precisely engineered to activate near the factory-specified 90°C threshold, ensuring proper coolant circulation and stable engine temperatures. Additionally, the inclusion of a galvanized steel bleeder screw improves sealing integrity and simplifies maintenance by allowing trapped air to be released from the cooling system, preventing air pockets that can reduce cooling performance.

Installation & Fitment

Designed as a direct replacement for factory thermostats in compatible Dodge Durango, Jeep Grand Cherokee, and Jeep Wrangler models from 2011 to 2018, installation is straightforward and requires no special tools or modifications. The thermostat fits seamlessly into the existing cooling system housing, making it an ideal upgrade for both professional mechanics and DIY enthusiasts.

Proper installation ensures reliable engine temperature regulation, helping to maintain engine efficiency and extend the life of your vehicle’s powertrain.

What's Included

• Mishimoto 90 Degree Thermostat with Aluminum Housing
• Galvanized steel bleeder screw
• Installation instructions

Ideal For

This thermostat is perfect for Jeep Wrangler, Dodge Durango, and Jeep Grand Cherokee owners who want to enhance their vehicle’s cooling system durability and reliability. It is especially suited for drivers who frequently encounter demanding conditions such as off-road adventures, hot climates, or heavy towing. Anyone looking to replace a worn or failing thermostat with a high-quality, long-lasting component will benefit from this Mishimoto upgrade.

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.