Mishimoto Low Temp Thermmostat

2004–2006 Scion xA / xB

Part #: MMTS-SUP-93TL

Overview

The Mishimoto Low Temp Thermostat is engineered specifically for the 2004 to 2006 Scion xA and xB models to enhance engine cooling efficiency. Designed for enthusiasts and tuners who demand reliable temperature control, this thermostat activates at a lower temperature of 68°C (155°F) compared to the factory standard of 82°C. By opening sooner, it allows coolant to circulate earlier in the warm-up cycle, helping to reduce and maintain optimal engine temperatures, especially under the increased thermal loads of modified or turbocharged setups.

This thermostat is ideal for drivers seeking to improve their vehicle’s cooling system performance, prevent overheating, and maintain consistent engine operation during spirited driving or track use.

Key Features

The Mishimoto Low Temp Thermostat offers several benefits that contribute to improved engine cooling and reliability:

• Activates at 68°C (155°F), significantly lower than OEM thermostats
• Promotes earlier coolant flow to reduce engine operating temperatures
• Helps prevent overheating in modified or turbocharged Scion xA and xB models
• Precision-engineered for direct fitment without modifications
• Durable construction designed to withstand high-performance conditions
• Improves overall cooling system efficiency for enhanced engine longevity
• Compatible with stock and upgraded cooling components

Construction & Design

The Mishimoto Low Temp Thermostat is crafted from high-quality materials to ensure durability and reliable operation under demanding conditions. Its robust design maintains consistent activation temperature and resists wear from continuous thermal cycling. The thermostat’s precision engineering guarantees a perfect fit for the 2004–2006 Scion xA and xB, ensuring seamless integration with the existing cooling system without the need for additional modifications or adapters.

Installation & Fitment

Installation of the Mishimoto Low Temp Thermostat is straightforward and designed to be a direct replacement for the factory unit on 2004 to 2006 Scion xA and xB models. No special tools or modifications are required, making it suitable for both professional mechanics and experienced enthusiasts. Proper installation ensures optimal coolant flow and temperature regulation, contributing to improved engine performance and reliability.

What's Included

• One Mishimoto Low Temp Thermostat (68°C / 155°F)
• Installation instructions

Ideal For

This thermostat is perfect for Scion xA and xB owners who have upgraded their vehicles with turbochargers or other performance modifications that increase engine heat. It is also suitable for drivers who want to improve their cooling system’s responsiveness and maintain lower engine temperatures during aggressive driving or track events. Additionally, it benefits anyone looking to replace a failing or aging thermostat with a high-quality, performance-oriented component.

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.