Mishimoto Racing Thermostat

2011–2025 Nissan R35 GTR 3.8L Twin-Turbo

Part #: MMTS-GTR-09

Overview

The Mishimoto 68 Degree Racing Thermostat is designed to optimize your Nissan R35 GTR's cooling system, especially in high-performance or modified applications. By lowering the opening temperature of the thermostat, this component helps your engine maintain cooler operating temperatures, which is crucial for turbocharged engines subjected to increased heat loads. Whether you're pushing your GTR on the street or at the track, this racing thermostat ensures your engine stays within optimal temperature ranges, promoting reliability and consistent performance.

If you’ve upgraded your turbo system or increased power output, managing engine heat becomes even more critical. The Mishimoto racing thermostat promotes greater cooling efficiency by allowing coolant to flow through the engine sooner, reducing high engine temperatures that can lead to heat soak, detonation, or engine damage. This upgrade is ideal for enthusiasts seeking to enhance their vehicle’s thermal management, especially under demanding driving conditions.

Key Features

The Mishimoto Racing Thermostat is engineered with precision to deliver superior cooling performance and durability. Its key features include:

• Lower opening temperature of 68°C (154°F), enabling earlier coolant flow to help maintain cooler engine temperatures during high-stress driving or tuning.
• Constructed from high-quality, corrosion-resistant materials to withstand the harsh conditions of high-performance engines.
• Designed specifically for the Nissan R35 GTR 3.8L twin-turbo engine, ensuring a perfect fit and reliable operation.
• Helps support increased horsepower and torque by reducing heat-related performance limitations.
• Optimizes engine cooling efficiency, which can contribute to improved turbocharger longevity and overall engine health.
• Easy installation with no modifications required, making it a straightforward upgrade for enthusiasts and professional mechanics alike.
• Manufactured by Mishimoto, a trusted name in performance cooling solutions, known for quality and innovation.

Construction & Design

The Mishimoto racing thermostat features a robust, precision-machined brass body with a high-temperature silicone seal, ensuring a leak-free operation under extreme conditions. Its design incorporates a high-flow valve that opens at the specified lower temperature, promoting faster coolant circulation. The thermostat’s construction emphasizes durability and thermal stability, allowing it to withstand the intense heat generated by turbocharged engines. Its compact, lightweight design ensures seamless integration into the factory cooling system without adding unnecessary weight or complexity.

Installation & Fitment

The Mishimoto 68 Degree Racing Thermostat is a direct replacement for the stock thermostat in the Nissan R35 GTR 3.8L twin-turbo engine. Installation is straightforward and typically requires only basic hand tools. No cutting, drilling, or complex modifications are necessary. It is recommended to follow standard cooling system bleeding procedures after installation to ensure proper coolant flow and system integrity. This upgrade is suitable for both DIY enthusiasts and professional technicians seeking a reliable solution to improve engine cooling performance.

• Easy bolt-on installation with no modifications required
• Compatible with the factory cooling system of the Nissan R35 GTR 3.8L twin-turbo engine
• Designed for high-performance applications, including tuned and modified engines

What's Included

• Mishimoto 68 Degree Racing Thermostat
• Installation gasket and hardware
• Comprehensive installation instructions

Ideal For

• Performance enthusiasts seeking improved cooling efficiency
• Owners of modified Nissan R35 GTRs with upgraded turbo systems
• Track day drivers and tuners aiming to prevent heat soak and maintain consistent power
• Anyone looking to enhance engine reliability under high-stress conditions