Koyo Radiator- Subaru WRX STI GC8 97-00

Koyo VH090302 Aluminium Racing Radiator Ð Subaru WRX / STI GC8

The Koyo VH090302 Aluminium Racing Radiator is a proven high-performance cooling upgrade for the Subaru WRX and WRX STI GC8. Designed for early EJ-series turbo platforms, this radiator features a full-aluminium construction and high-density core to significantly improve coolant flow and thermal efficiency compared to ageing OEM plastic-tank radiators.

With a 36 mm Hyper Core and precision TIG-welded end tanks, the VH090302 delivers increased cooling capacity to help keep the EJ20 engine stable during spirited driving, boosted setups, rally, track days and endurance applications. It is engineered as a direct bolt-in replacement, retaining factory mounting points, OEM hose locations and fan compatibility for seamless installation.

From street builds to classic GC8 gravel and circuit cars, this Koyo radiator provides reliable temperature control to protect engine performance under sustained high load.

Key Features

• 36 mm Koyorad Hyper Core for excellent cooling efficiency
• Full aluminium construction Ð no plastic end tanks to crack
• TIG-welded for long-term strength and leak resistance
• Direct bolt-in replacement using OEM mounts and fan shrouds
• Improved coolant flow and heat dissipation over factory unit
• Ideal for tuned GC8 builds, rally, track and high-boost applications

Vehicle Fitment

• 1993-2000 Subaru Impreza WRX (GC8)
• 1994-2000 Subaru Impreza WRX STI (GC8/GF8)
• Suitable for EJ20 turbo models