Mishimoto Aluminum Auxiliary Radiators

2020–2022 Toyota GR Supra 3.0L

MMRAD-SUP-20A

Overview:

The Mishimoto Aluminum Auxiliary Radiators are engineered specifically for the 2020 to 2022 Toyota GR Supra 3.0L, providing enhanced cooling performance to keep your B58 engine running at optimal temperatures. Designed for enthusiasts who push their Supra on the track, canyon roads, or during spirited street driving, these auxiliary radiators help prevent overheating that can compromise performance and reliability. By upgrading the slim stock auxiliary cooling system, Mishimoto ensures your Supra stays cool under demanding conditions, allowing you to focus on driving without worry.

Whether you are a tuner, track day enthusiast, or daily driver seeking improved thermal management, these radiators offer a robust solution that complements the factory cooling system and supports sustained high-performance operation.

Key Features:

These auxiliary radiators incorporate advanced design elements to maximize cooling efficiency and durability:

• 1.57-inch thick, efficiently brazed aluminum core for superior heat transfer
• 30% increase in core volume compared to the stock auxiliary radiator
• Expanded external fin surface area by 180% with an updated tube-and-fin design for enhanced heat dissipation
• Full aluminum construction with TIG-welded end tanks for increased strength and longevity
• Strutted tubes throughout the core to improve structural stability and reduce risk of leaks or breaks
• Polished finish for a clean, high-quality appearance under the hood
• Sold as a pair to ensure balanced cooling performance on both sides of the engine bay
• Backed by the Mishimoto Lifetime Warranty for peace of mind

Construction & Design:

The Mishimoto auxiliary radiators replace the factory’s slim core and plastic end tanks with a fully aluminum design, expertly TIG-welded for exceptional durability. The thicker 1.57-inch core increases coolant capacity by 30%, allowing for greater heat absorption and dissipation. The tube-and-fin architecture has been optimized to expand the external fin surface area by 180%, significantly improving airflow and cooling efficiency. Strutted tubes reinforce the core, enhancing resistance to vibration and mechanical stress encountered during aggressive driving or track use. This robust construction ensures the radiators withstand the rigors of street, track, and drag strip environments while maintaining reliable performance.

Installation & Fitment:

Designed as a direct fit for the 2020–2022 Toyota GR Supra 3.0L, these auxiliary radiators install easily using existing mounting points with no major modifications required. The pair is engineered to integrate seamlessly with the factory cooling system and Mishimoto’s Performance Aluminum Radiator for a comprehensive thermal management upgrade. Installation can typically be completed with basic hand tools and standard mechanical knowledge, making it accessible for enthusiasts and professional installers alike.

What's Included:

• Two Mishimoto Aluminum Auxiliary Radiators (driver and passenger side)
• Polished aluminum finish
• Installation hardware (where applicable)
• Mishimoto Lifetime Warranty documentation

Ideal For:

This upgrade is ideal for Toyota GR Supra owners who demand improved cooling performance during high-load driving scenarios such as track days, autocross, canyon carving, or spirited street driving. It is especially beneficial for those who have modified their Supra for increased power output or who frequently operate their vehicle in hot climates where thermal management is critical. The Mishimoto Aluminum Auxiliary Radiators provide peace of mind by reducing the risk of overheating and maintaining consistent engine temperatures for reliable performance.

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.