Performance Koyo Radiator, Mazda RX7, FD S6, Dual Pass, 92-95, 48mm, (KH060644NU06)

RX-7 FD Radiator – Koyorad HH Series 48mm Radiator Core KH060644N | Direct Fit Cooling Upgrade

Upgrade your RX-7 FD radiator with the Koyorad HH Series 48mm Radiator Core (KH060644N), designed for drivers who demand top-tier cooling performance. Whether you're pushing your turbocharged 13BT on the street or track, this direct-fit radiator keeps your engine cool under pressure, preventing overheating and maintaining peak horsepower.

This RX-7 FD radiator features Koyorad’s advanced N-FLO Technology, which optimizes coolant flow by allowing double or triple passes inside the radiator. This extends coolant dwell time, maximizing heat transfer and keeping your turbo engine running smooth even during intense driving sessions. The 48mm ultra-high density aluminum core boasts precise tube and fin alignment, giving you outstanding heat dissipation in a lightweight package.

Crafted with the finest materials and backed by Koyorad’s meticulous quality control, this radiator is hand-assembled, Nocolok brazed, and TIG welded by hand in Japan. The billet filler neck and OE-specific mounts make for a quick, bolt-in installation with no modifications required—perfect for anyone who wants to upgrade without hassle. For automatic transmission models, an external transmission cooler is recommended for optimal performance.

Features and Benefits:

• N-FLO Technology – Enhances cooling efficiency by increasing coolant flow and heat transfer with double/triple pass design.

• 48mm High-Density Core – Provides superior cooling capacity for high-performance turbocharged RX-7 FD engines.

• All-Aluminum Construction – Lightweight yet strong, offering excellent corrosion resistance and durability.

• Nocolok Brazed – Bonds tubes, fins, headers, and brackets to withstand vibration, road debris, and weather.

• Billet Filler Neck – Precision-machined for strength, durability, and secure sealing under pressure.

• Hand-Crafted Heliarc Welds – Guarantees unmatched aluminum-to-aluminum bond strength.

• OE-Specific Mounting – Allows easy installation with stock fan shrouds, hoses, and mounting points—no cutting or modifications.

• 1/8” NPT Sensor Port – Supports aftermarket temperature gauge installation (plug included).

• External Transmission Cooler Required – For automatic transmission models, to protect transmission from overheating.

Upgrade Your RX-7 FD’s Cooling Game

Don’t settle for a radiator that can’t keep up with your driving style. The Koyorad HH Series RX-7 FD radiator provides reliable cooling that lets you push your turbocharged 13BT engine hard without worrying about overheating. Whether you’re hitting canyon roads or the racetrack, this radiator keeps your FD running cool and strong.

Technical Specifications: