Koyorad Performance Radiator: Subaru Impreza / WRX STI / Legacy / Liberty / XV MT 2008-2021
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Description
Koyo Performance Radiator – Subaru Impreza / WRX STI / Legacy / Liberty / XV MT
Application: Subaru Impreza / WRX STI / Legacy / Liberty / XV | EJ20 / EJ257 / FB20 Petrol AWD | Manual Transmission
Part Number: VH091662 / KV091662
The EJ-series Subaru platform is one of the most popular and enduring performance foundations in the world — from the Impreza and WRX STI to the Legacy/Liberty GT and XV. 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 turbocharged boxer engines under sustained load.
Koyorad's all-aluminium radiator is a direct bolt-in performance upgrade across the GH8, GRB, BL5, BP5, VAB, and G-series platforms, engineered to the same factory fit and mounting points as the OE unit. Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested — it retains all OEM fan shroud mounts and stock hose connections with no modifications required.
Why Koyorad?
- Precise Tube & Fin Alignment — Strict quality control ensures optimal coolant flow and maximum heat transfer efficiency across the entire core.
- Nocolok Furnace Brazing — All tubes, fins, headers, and brackets are bonded in a state-of-the-art Nocolok furnace, creating a structure that resists vibration, road debris, and the elements.
- Billet Filler Neck — Precision-machined billet filler necks are fitted to every unit for superior strength, durability, and a reliable seal.
- OE-Specific Mounting — Application-specific mounting points for fan shrouds, inlet/outlet hoses, and top/bottom pins ensure a pain-free, no-modification install.
- Hand-Crafted Heliarc Welds — Each radiator is individually Heliarc welded by hand, creating the strongest possible aluminium-to-aluminium bond across all components.
Specifications
| Part Number | VH091662 / KV091662 |
| Core Thickness | 36mm |
| Core Dimensions (H × W) | 340 × 677/701mm |
| Tube Pitch | 43/43 × 713mm |
| Inlet / Outlet Diameter | Ø38mm (bottom) |
| Construction | All Aluminium, Nocolok Brazed, Heliarc Welded |
| Transmission | Manual (MT) |
| Fan Shroud | Retains OEM mounts |
| Hoses | Compatible with stock radiator hoses |
| Fitment | Direct bolt-in, no modifications required |
Cross Reference
| Koyorad | VH091662 / KV091662 |
| Subaru OEM | 45111 AG010 / 45111 AG011 / 45111 AG030 / 45111 AG031 / 45119 AG010 / 45119 AG030 / 45119 FG010 / 45119 FG030 / 45119 FG050 / 45119 GA010 / 45119 SC010 / 45119 SC090 / 45119 VA000 / 45119 VA010 |
Fitment
| Year | Make | Model | Chassis | Submodel |
|---|---|---|---|---|
| 2003+ | Subaru | Impreza | CBA-GH8 | EJ25 Petrol AWD |
| 2008–2009 | Subaru | Impreza / WRX STI | CBA-GRB | EJ25 Petrol AWD |
| 2003+ | Subaru | Legacy / Liberty | TA-BL5 (4D Sedan) | EJ25 Petrol AWD |
| 2003+ | Subaru | Legacy / Liberty | TA-BP5 (5D Wagon) | EJ20 Petrol AWD |
| 2003+ | Subaru | Legacy / Liberty | UA-BL5 (4D Sedan) | EJ25 Petrol AWD |
| 2003+ | Subaru | Legacy / Liberty | UA-BP5 (5D Wagon) | EJ20 Petrol AWD |
| 2014+ | Subaru | WRX STI | GBA-VAB (4D Sedan) | EJ25 Petrol AWD |
| 2011+ | Subaru | WRX STI | G3 (4D Sedan) | EJ257 2.5L Turbo Petrol AWD |
| 2011+ | Subaru | XV | G4 (5D Hatch) | FB20 2.0L Petrol AWD |
Installation Notes
- WRX models with 13mm turbo return pipe: Trim the return pipe as required. The optional coolant port uses an M14-1.25 thread.
- Automatic transmission vehicles: Compatible, however an external transmission oil cooler is required — sold separately.
Sold individually. Manual transmission fitment. Lead times may apply — contact us at Coore for availability and shipping estimates.
Coore Performance & Aftermarket is an Authorised Australian Distributor of Koyorad Performance Radiators.
Shop with confidence — all Koyorad products sold through Coore are genuine, backed by manufacturer support, and shipped from Australia.