Koyo 08-15 Subaru WRX / STI 05-09 Subaru Legacy GT 2.5L (MT / w/ Filler Neck) Radiator
PRODUCT INFORMATION
When it comes to cooling performance, few names carry the same respect in the motorsports world as Koyorad. Precision-crafted in Japan and trusted by professional teams around the globe, Koyorad radiators are engineered from the ground up to offer unmatched heat dissipation, reliability, and long-term performance. Whether you're daily driving, road racing, drifting, or just pushing your vehicle with spirited canyon runs, keeping engine temps stable is critical—and Koyorad delivers.
At the heart of every Koyorad radiator is its high-efficiency dual- or triple-core aluminum construction, designed to provide maximum surface area without sacrificing flow. Unlike lower-tier radiators that simply copy OEM designs with larger cores, Koyorad re-engineers each radiator from scratch to maximize coolant passage efficiency and fin density for real-world cooling gains. Their N-FLO and Hyper V-Core technology ensure consistent temperature regulation even under race-level heat loads.
Koyorad radiators are all fully TIG welded with OE-level fit and finish. They install easily without cutting or modifying and retain compatibility with factory fan shrouds, hoses, and sensors. The result? A true drop-in solution that supports serious performance upgrades—no compromises.
- Precision TIG-welded aluminum construction with high-density fins
- Engineered from scratch for optimal flow and heat transfer—not just an OEM copy
- N-FLO and Hyper V-Core technology provide superior cooling under extreme conditions
- Supports turbocharged, high-compression, and track-ready builds
- Direct-fit installation—uses OEM mounting points, fans, and hoses
Whether you're running increased boost, track sessions, or just want peace of mind for long-term reliability, a Koyorad radiator is one of the smartest cooling upgrades you can make. With decades of R&D and OEM-level manufacturing standards, Koyorad has earned its reputation as a go-to choice for high-performance enthusiasts worldwide.