Koyorad Racing Aluminium Radiator | Mitsubishi Lancer Evolution 1-3 | 4G63 (1992|1996)

The Koyorad Racing Aluminium Radiator is a direct-fit upgrade for your early Evo, built to handle the cooling demands of a rally-bred 4G63 under sustained boost. 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.

Rally-Bred Power Needs Rally-Bred Cooling

The 4G63 was built to handle huge boost, but a factory plastic-tank radiator on a car this age was never designed for a lifetime of hard driving, let alone a built Evo running more power than stock. Heat soak on track or in traffic hits fast and hits hard.

A Cooling System Built for Real Punishment

Koyo's 48mm 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 under sustained boost, and a radiator tough enough to handle whatever's next for your Evo | more boost, more track days, more seat time.

Key Features

• All-aluminium construction with TIG-welded tanks for maximum durability
• 48mm 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