Mishimoto Low-Temp Thermostat Aluminum Housing

2016–2026 Dodge Durango / 2016–2022 Jeep Grand Cherokee / 2018–2026 Jeep Wrangler / 2020–2026 Jeep Gladiator 3.6L V6

Part #: MMTS-MOP-18L

Overview

The Mishimoto Low-Temp Thermostat with Aluminum Housing is a premium direct replacement designed specifically for Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler JL, and Jeep Gladiator models equipped with the 3.6L Pentastar V6 engine from 2016 through 2026. This thermostat assembly improves cooling system reliability by replacing the factory plastic housing with a durable aluminum unit and lowering the thermostat opening temperature to 82°C (180°F), allowing coolant to circulate earlier than the stock 195°F thermostat.

Ideal for enthusiasts who demand enhanced thermal management, this thermostat helps prevent overheating during heavy towing, off-road adventures, or driving in hot climates. By maintaining optimal engine temperatures, it protects your engine and ensures consistent performance under demanding conditions.

Key Features

Engineered for durability and improved cooling efficiency, the Mishimoto Low-Temp Thermostat offers the following benefits:

• Opens at 82°C (180°F), 15°F lower than the factory thermostat for earlier coolant flow and better temperature control
• Aluminum housing replaces the stock plastic unit to eliminate common failure points such as cracking and leaks
• High-quality wax pellet ensures precise and reliable thermostat activation
• Enhances cooling system efficiency to reduce the risk of engine overheating in extreme conditions
• Direct bolt-on fitment for 2016–2026 Dodge Durango, 2016–2022 Jeep Grand Cherokee, 2018–2026 Jeep Wrangler JL, and 2020–2026 Jeep Gladiator with 3.6L V6 engines
• Designed to withstand off-road vibrations, towing stress, and high ambient temperatures
• Backed by Mishimoto’s Lifetime Warranty for long-term peace of mind

Construction & Design

The thermostat housing is crafted from robust, heat-dissipating aluminum, offering superior strength and durability compared to the factory plastic housing. This upgrade significantly reduces the risk of cracks, leaks, and premature failure that can compromise engine cooling performance. The thermostat features a premium wax pellet for accurate temperature activation, ensuring coolant begins circulating promptly at 82°C (180°F).

The combination of high-quality materials and precise engineering results in a component built to endure rigorous off-road use, towing demands, and high-temperature environments, providing reliable cooling system performance over the long term.

Installation & Fitment

This Mishimoto thermostat assembly is a direct bolt-on replacement for the stock thermostat and housing on compatible Dodge and Jeep models with the 3.6L Pentastar engine. Installation requires no modifications and can be completed using basic hand tools. Replacing the plastic housing with the aluminum unit not only improves durability but also simplifies future maintenance by providing a more robust mounting point for hoses and sensors.

What's Included

• Mishimoto Low-Temperature Thermostat (82°C / 180°F)
• Aluminum thermostat housing
• Gaskets and seals required for installation

Ideal For

This thermostat is perfect for Jeep and Dodge owners who demand reliable cooling performance in challenging environments. Whether you frequently tow trailers, tackle technical off-road trails, or drive in hot climates, the Mishimoto Low-Temp Thermostat helps maintain optimal engine temperatures to prevent overheating and protect your investment. It is especially beneficial for those upgrading their cooling system or replacing a failed plastic thermostat housing.

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.