Koyo Performance Radiator – Subaru Forester XT SG9 EJ25 2004–2008
Installation requirement: 2004–2005 Forester XT 5MT models require a return-hose modification and an additional radiator cap. See the installation notes below.
Application: Subaru Forester XT | TA-SG9 | EJ25 2.5L Turbo Petrol AWD | Manual & Automatic Transmission
Part Number: VH13026 / KV092217R
The SG9 Forester XT is one of the most capable and underrated performance wagons of its era — a turbocharged EJ25 boxer, symmetrical AWD, and a practical body that makes it equally at home on a gravel road or a circuit. Whether it's a daily driver, a rally-inspired build, or a track car, keeping coolant temperatures stable is fundamental to getting the most out of the EJ25 under sustained load.
Koyorad's all-aluminium radiator is a performance upgrade for the SG9 Forester XT, 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 OEM fan shroud mounts and main radiator hose connections. Installation requirements vary by model; see the notes below.
Why Koyorad?
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Precise Tube & Fin Alignment — Strict quality control ensures optimal coolant flow and maximum heat transfer efficiency across the entire core.
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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.
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Billet Filler Neck — Precision-machined billet filler necks are fitted to every unit for superior strength, durability, and a reliable seal.
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OE-Specific Mounting — Factory fan shroud mounts and main radiator hose connections are retained. See the installation requirements below.
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Hand-Crafted Heliarc Welds — Each radiator is individually Heliarc welded by hand, creating the strongest possible aluminium-to-aluminium bond across all components.
