Mishimoto Low-Temperature Thermostat with Aluminum Housing: Jeep Wrangler JK (07-18) / Grand Cherokee (05-10)

Mishimoto Low-Temperature Thermostat with Aluminum Housing

2007–2018 Jeep Wrangler JK / 2005–2010 Jeep Grand Cherokee 3.6L

MMTS-WRA-12V2

Overview:

The Mishimoto Low-Temperature Thermostat with Aluminum Housing is a precision-engineered cooling system upgrade designed specifically for Jeep Wrangler JK models from 2007 to 2018 and Jeep Grand Cherokee models from 2005 to 2010 equipped with the 3.6L engine. This thermostat replaces the factory unit to improve engine temperature management by opening at a lower temperature of 180°F, compared to the stock thermostat’s 203°F. By allowing coolant to circulate earlier, it helps reduce and maintain lower engine coolant temperatures, which is especially beneficial for vehicles operating in warm climates or under demanding conditions such as towing or off-road driving.

Engine overheating can lead to serious internal damage and costly repairs. Upgrading to the Mishimoto low-temperature thermostat ensures your Jeep’s engine stays within optimal temperature ranges, enhancing reliability and longevity. The thermostat’s robust aluminum housing and galvanized steel bleeder screw provide superior durability and corrosion resistance, making it a dependable choice for Jeep enthusiasts seeking improved cooling performance.

Key Features:

This thermostat upgrade offers a range of benefits tailored to enhance your Jeep’s cooling system efficiency and durability:

• Activates at a lower temperature of 180°F versus the factory 203°F, enabling earlier coolant flow
• Reduces and maintains lower engine coolant temperatures for improved thermal management
• Ideal for vehicles operating in warm climates or under extreme towing and driving conditions
• Durable aluminum housing resists corrosion and heat-related wear
• Galvanized steel bleeder screw included for easy air bleeding and maintenance
• Constructed with high-quality wax for reliable and repeatable thermostat operation
• Direct fitment for 2007–2018 Jeep Wrangler JK and 2005–2010 Jeep Grand Cherokee 3.6L engines
• Backed by the Mishimoto Lifetime Warranty, ensuring long-term quality and craftsmanship

Construction & Design:

The Mishimoto thermostat features a rugged aluminum housing engineered to withstand the harsh conditions of engine bays exposed to heat, vibration, and corrosion. Aluminum’s excellent thermal conductivity aids in dissipating heat quickly, contributing to more consistent coolant temperatures. The thermostat mechanism itself is built with premium wax elements that provide precise and repeatable activation at the specified temperature threshold. Additionally, the galvanized steel bleeder screw allows for efficient removal of trapped air from the cooling system, ensuring optimal coolant flow and preventing hot spots.

Every component is designed with durability and performance in mind, making this thermostat a reliable upgrade over the OEM plastic or stamped steel housings that can degrade over time.

Installation & Fitment:

Installation of the Mishimoto Low-Temperature Thermostat is straightforward and requires no modifications. It is a direct replacement for the factory thermostat and housing on 2007–2018 Jeep Wrangler JK and 2005–2010 Jeep Grand Cherokee models with the 3.6L engine. The included bleeder screw simplifies the bleeding process, allowing for a thorough purge of air from the cooling system to prevent overheating issues. This upgrade is suitable for both professional mechanics and experienced DIY enthusiasts looking to enhance their vehicle’s cooling performance.

What's Included:

• Mishimoto Low-Temperature Thermostat
• Aluminum thermostat housing
• Galvanized steel bleeder screw
• Gaskets and necessary hardware for installation
• Installation instructions

Ideal For:

This thermostat is ideal for Jeep owners who demand improved cooling efficiency and engine protection. It is especially suited for those living in hot climates, frequently towing heavy loads, or engaging in off-road driving where engine temperatures can rise rapidly. By maintaining lower coolant temperatures, this thermostat helps prevent overheating and extends engine life, making it a smart upgrade for daily drivers and adventure seekers alike.