Koyorad Aluminium Racing Radiator - Subaru WRX/STI (GD/GG)

Koyo has built a strong reputation in motorsport cooling, and this aluminium racing radiator is a solid upgrade for anyone pushing their Subaru WRX or STI harder than the factory cooling system was designed to handle. All aluminium construction means better heat dissipation, genuine repairability, and none of the long term cracking concerns that come with factory plastic tank radiators under repeated heat cycles.

This listing covers the 2001–2007 Subaru WRX / STI (GD/GG chassis), manual transmission only. SKU: VH091672.

Important: This radiator is compatible with manual transmission vehicles only. The upper radiator hose may require trimming for correct clearance. Early model WRX owners should confirm their stock radiator has a radiator cap — early WRX models without a radiator cap require the 2002 WRX radiator instead.

Key Features

• Full aluminium construction — no plastic tanks to crack or degrade over time
• Heli-arc welded joints for reinforced strength at all aluminium connections
• Thicker core for increased coolant volume and heat transfer capacity
• Precise tube and fin alignment for optimal coolant flow and heat dissipation
• NoClock furnace brazing on tubes, fins, headers, and brackets — resists vibration, road debris, and corrosion
• Billet filler neck precision machined for durability
• 1/8PT female accessory fitting included, supplied with a threaded plug
• Manual transmission fitment only

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, transmission type, and configuration are confirmed before ordering.

Not sure if this radiator suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.