Koyorad Performance Radiator for Subaru Impreza WRX / STI GDA / GDB / GDF / GGA 2002-2007
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Description
Koyo Performance Radiator – Subaru Impreza WRX / STI GDA / GDB / GDF / GGA 2002–2007
Application: Subaru Impreza WRX / WRX STI | GDA / GDB / GDF / GGA | EJ205 / EJ207 / EJ255 / EJ257 Turbo Petrol AWD | 4AT / 5MT / 6MT
Part Number: VH091672 / KV091672R
The GD-series Impreza WRX and STI are among the most popular and enduring performance platforms in Australia. Whether it's a street build, a rally car, or a track weapon, keeping coolant temperatures stable is fundamental to getting the most out of these engines under sustained load.
Koyorad's all-aluminium radiator is a direct bolt-in performance upgrade across the GDA, GDB, GDF, and GGA Impreza platform. Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested — retains all OEM fan shroud mounts and stock hose connections with no modifications required.
Why Koyorad?
- Precise Tube & Fin Alignment — Optimal coolant flow and maximum heat transfer efficiency.
- Nocolok Furnace Brazing — All components bonded as one unit for vibration and debris resistance.
- Billet Filler Neck — Precision-machined for strength, durability, and a reliable seal.
- OE-Specific Mounting — Retains factory fan shroud, hose positions, and mounting pins.
- Hand-Crafted Heliarc Welds — Individually welded for the strongest possible aluminium-to-aluminium bond.
Specifications
| Part Number | VH091672 / KV091672R |
| Core Thickness | 36mm |
| Core Dimensions (H x W) | 340 x 686/701mm |
| Tube Pitch | 43/43 x 713mm |
| Inlet / Outlet | 38mm top and bottom |
| Construction | All Aluminium, Nocolok Brazed, Heliarc Welded |
| OEM Numbers | 45111 FE101 / 45111 FE102 |
Fitment
| Year | Chassis | Submodel | Trans |
|---|---|---|---|
| 2002-2005 | GDA Sedan | WRX EJ205 2.0T AWD 168kW | 4AT |
| 2002-2005 | GDA Sedan | WRX EJ205 2.0T AWD 168kW | 5MT |
| 2006-2007 | GDA Sedan | WRX EJ255 2.5T AWD 169kW | 4AT |
| 2006-2007 | GDA Sedan | WRX EJ255 2.5T AWD 169kW | 5MT |
| 2005 | GDA Sedan | WRX WRP10 EJ205 2.0T AWD 175kW | 5MT |
| 2002-2005 | GDB Sedan | WRX STI EJ207 2.0T AWD 206kW | 6MT |
| 2006-2007 | GDF Sedan | WRX STI EJ257 2.5T AWD 206kW | 6MT |
| 2002-2005 | GGA Wagon | WRX EJ205 2.0T AWD 168kW | 4AT |
| 2002-2005 | GGA Wagon | WRX EJ205 2.0T AWD 168kW | 5MT |
| 2006-2007 | GGA Wagon | WRX EJ255 2.5T AWD 169kW | 4AT |
| 2006-2007 | GGA Wagon | WRX EJ255 2.5T AWD 169kW | 5MT |
Sold individually. Lead times may apply — contact us at iilumolab for availability and shipping estimates.
iilumolab is an Authorised Australian Distributor of Koyorad Performance Radiators.
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.