Koyo Aluminium Racing Radiator | Toyota 86 / Subaru BRZ ZN6 (2012|)

The Koyo Aluminium Racing Radiator is a direct-fit upgrade for your ZN6-platform 86 or BRZ, built to keep the FA20/FA24 flat-four cool through track days, drift events and spirited weekend drives. Hand-TIG-welded in Japan from all-aluminium construction, it drops straight into the factory mounting points for a clean, no-fuss install with a serious step up in cooling performance.

A Track-Ready Chassis Deserves a Track-Ready Radiator

The ZN6/ZC6 platform is one of the most track-friendly chassis on the market, but the factory plastic-tank radiator wasn't designed with repeated lapping sessions, towing, or aftermarket boost in mind. Heat soak creeps in fast once you start pushing it.

A Cooling System Built for Real Punishment

Koyo's 36mm core is engineered with optimised fin density and tube design to move more heat out of the system, backed by a full-aluminium, TIG-welded build that shrugs off the vibration and heat-cycling that kills OEM plastic tanks over time. Every unit is pressure-tested before it leaves the factory.

Cooler Coolant, More Confidence on Track

With stable coolant temps locked in, you get consistent power lap after lap, less risk of overheating on hot laps or in traffic, and a radiator tough enough to handle whatever's next for your 86 or BRZ | a supercharger, more track days, more seat time.

Key Features

• All-aluminium construction with TIG-welded tanks for maximum durability
• 36mm core for increased cooling capacity over the factory unit
• Optimised fin density and tube design for efficient heat transfer
• Direct-fit design | uses factory mounting points and fan shroud, no modifications required
• Compatible with standard radiator caps and coolant hoses (unless otherwise specified)
• Pressure-tested for reliability under sustained high load and temperature
• Ideal foundation for further performance upgrades, including higher boost levels and track use
• Made in Japan

Specifications