Mishimoto Low Temp Thermmostat

2003–2006 Jeep Wrangler 4.0L I6, 2007–2011 Jeep Wrangler 3.8L V6

Part #: MMTS-NEO-97

Overview

The Mishimoto Low Temp Thermostat is a precision-engineered cooling component designed to improve the thermal management of Jeep Wrangler engines from 2003 to 2011, specifically the 4.0L inline-6 and 3.8L V6 models. By activating at a lower temperature of 158°F (70°C), this thermostat allows coolant to circulate through the engine earlier than standard units, effectively reducing high engine temperatures. This enhanced cooling efficiency is especially beneficial for vehicles with performance modifications or turbocharged setups, helping to maintain consistent and safe operating conditions.

Built to serve both stock and upgraded engines, the Mishimoto Low Temp Thermostat ensures optimal temperature regulation, preventing overheating and protecting critical engine components. Its direct-fit design guarantees a hassle-free installation without the need for any modifications, making it an ideal upgrade for Jeep enthusiasts seeking improved engine longevity and reliability.

Key Features

Designed with performance and durability in mind, the Mishimoto Low Temp Thermostat offers the following key benefits:

• Activates at a lower temperature of 158°F (70°C) for earlier coolant flow
• Reduces engine heat to improve performance and reliability
• Compatible with both stock and modified Jeep Wrangler engines
• Direct-fit replacement requiring no modifications or additional parts
• Promotes consistent operating temperatures to extend engine life
• Engineered specifically for 2003–2006 Jeep Wrangler 4.0L I6 and 2007–2011 3.8L V6 engines
• Constructed for durability under demanding driving conditions
• Backed by the Mishimoto Lifetime Warranty for long-term peace of mind

Construction & Design

The Mishimoto Low Temp Thermostat is crafted from high-quality materials engineered to withstand the rigors of daily driving and high-performance use. Its robust construction ensures reliable operation over extended periods, resisting corrosion and thermal fatigue. The thermostat’s precise calibration guarantees activation at the specified lower temperature, enabling improved coolant flow without compromising engine efficiency. This attention to detail reflects Mishimoto’s commitment to delivering durable, high-performance cooling components that meet or exceed OEM standards.

Installation & Fitment

Installation of the Mishimoto Low Temp Thermostat is straightforward and user-friendly. Designed as a direct-fit replacement for the factory thermostat, it installs easily into the existing housing without requiring any modifications or additional hardware. This ensures a quick upgrade process that can be completed with basic hand tools, making it accessible for both professional mechanics and experienced DIY enthusiasts. The thermostat is compatible with Jeep Wrangler models equipped with the 4.0L inline-6 engine from 2003 to 2006 and the 3.8L V6 engine from 2007 to 2011.

What's Included

• Mishimoto Low Temp Thermostat (MMTS-NEO-97)
• Installation instructions
• Mishimoto Lifetime Warranty documentation

Ideal For

This thermostat is ideal for Jeep Wrangler owners looking to enhance their vehicle’s cooling system performance, particularly those with modified or turbocharged engines that generate higher operating temperatures. It is also a smart upgrade for daily drivers seeking improved engine temperature regulation to prevent overheating and extend engine life. Whether you are restoring a stock vehicle or upgrading for off-road and performance applications, the Mishimoto Low Temp Thermostat provides reliable, efficient cooling management.

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.