Koyorad Performance Radiator: Mitsubishi Lancer Evolution 4/5/6 4G63 MT | HH030939
Koyorad Performance Radiator: Mitsubishi Lancer Evolution 4/5/6 4G63 MT | HH030939 is backordered and will ship as soon as it is back in stock.
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Koyorad Performance Radiator: Mitsubishi Lancer Evolution 4/5/6 4G6...
Koyo Performance Radiator – Mitsubishi Lancer Evolution IV / V / VI 4G63 MT
Application: Mitsubishi Lancer Evolution IV / V / VI | CF-CP9A / E-CN9A / GF-CP9A | 4G63 | Manual Transmission
Part Numbers: KH030939 (Koyorad Japan) / HH030939 (Koyorad)
The Lancer Evolution IV, V, and VI are among the most iconic all-wheel-drive performance cars ever built — homologation specials born from Mitsubishi's World Rally Championship programme, powered by the legendary turbocharged 4G63. Whether you're running a stock Evo or a built motor pushing serious power, keeping coolant temperatures in check is critical to protecting the 4G63 under sustained high-load conditions on track or on the stages.
Koyorad's all-aluminium KH030939 is a direct bolt-in performance upgrade engineered specifically for manual transmission Evo IV, V, and VI models. 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.
Cross Reference
| Koyorad | KH030939 |
| Mitsubishi OEM | TBA |
Fitment
| Year | Make | Model | Chassis | Submodel |
|---|---|---|---|---|
| 1996–1998 | Mitsubishi | Lancer | CN9A (4D Sedan) | Evolution IV — 4G63T 2.0L Turbo Petrol AWD (206kW) |
| 1998–1999 | Mitsubishi | Lancer | CP9A (4D Sedan) | Evolution V — 4G63T 2.0L Turbo Petrol AWD (206kW) |
| 1999–2001 | Mitsubishi | Lancer | CP9A (4D Sedan) | Evolution VI — 4G63T 2.0L Turbo Petrol AWD (206kW) |
Installation Notes
- MT Only — Manual transmission models only.
- Fan: Must use Evolution 7/8/9 fan.
- Evo 7/8/9 compatibility: Can be installed to Evolution 7/8/9 for better turbo/manifold clearance. Evo 6 upper hose required, stock fan will mount, but stock air intake system is not compatible.
Sold individually. Manual transmission fitment only. Lead times may apply — contact us at ModsDirect for availability and shipping estimates.
ModsDirect is an Authorised Australian Distributor of Koyorad Performance Radiators.
Shop with confidence — all Koyorad products sold through ModsDirect are genuine, backed by manufacturer support, and shipped from Australia.
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