Mishimoto Auxiliary Radiators

Part #: MMRAD-SUP-20A

Overview

The Mishimoto Auxiliary Radiators are high-performance cooling components designed specifically for the 2020-2026 Toyota Supra 3.0L and 2019-2025 BMW Z4 3.0L equipped with the B58 engine. These auxiliary radiators serve as an additional cooling solution to help maintain optimal engine temperatures during demanding driving conditions, such as track days or spirited canyon runs. Built with durability and efficiency in mind, they are ideal for enthusiasts seeking to enhance their vehicle’s cooling capacity and overall reliability under high-stress scenarios. Whether you're a dedicated tuner or a casual enthusiast, these radiators support your vehicle’s cooling system to ensure consistent performance and peace of mind during intense driving sessions.

Key Features

Designed with high-quality aluminum construction for excellent heat dissipation and corrosion resistance, these radiators feature a lightweight yet robust design that seamlessly integrates with your vehicle’s cooling system. The core is engineered with a multi-pass design to maximize coolant flow and heat transfer efficiency, helping to keep coolant temperatures lower under load. The radiators are precision-machined for a perfect fit and include all necessary mounting hardware for straightforward installation. Their sleek, OEM-style appearance complements the engine bay aesthetic while providing enhanced cooling performance. These auxiliary radiators are an excellent upgrade for those looking to support their vehicle’s cooling system during high-performance driving or modifications.

Construction & Design

Constructed from high-grade aluminum, these radiators are designed for optimal thermal management and durability. The multi-pass core design improves heat transfer efficiency, helping to prevent overheating during extended or aggressive driving. The precision-machined tanks and fittings ensure a secure, leak-free connection and long-lasting performance.

Installation & Fitment

Installation involves replacing or supplementing the factory radiators with the Mishimoto auxiliary units, requiring basic mechanical skills. The radiators are designed for a direct bolt-on fitment, with all necessary hardware included, making the upgrade straightforward for most enthusiasts.

What’s Included

The package includes two auxiliary radiators, mounting brackets, hardware, and installation instructions, providing everything needed for a complete upgrade.

Ideal For

Perfect for owners of the Toyota Supra and BMW Z4 who want to improve cooling efficiency, especially during high-performance driving, track use, or vehicle modifications that increase heat output.