Koyo (Koyorad) Performance Radiator: Honda NSX NA1 / NA2 1990-2005

Koyo Performance Radiator – Honda NSX NA1 / NA2 (1990–2005)

Application: Honda NSX MT | NA1 / NA2 | C30A / C32B | 1990–2005

Part Number: KV082303R | V2032

The Honda NSX is one of the most iconic Japanese sports cars ever built — a mid-engined, aluminium-bodied masterpiece that redefined what a supercar could be. Whether you're preserving a concours example or pushing your NSX hard on track, the factory radiator can become a limiting factor under sustained high-load conditions. The Koyorad KV082303R is a direct bolt-in performance upgrade engineered specifically for the NA1 and NA2 NSX, delivering improved cooling capacity without any cutting, drilling, or fabrication.

Koyorad's all-aluminium construction and high-efficiency core design dissipate heat faster and more effectively than the factory unit, keeping coolant temperatures in check even under sustained high-load driving. 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: KV082303R
• Core Thickness: 36mm
• Core Dimensions (H × W): 340 × 686/706mm
• Tank Dimensions: 43/43 × 705mm
• Inlet / Outlet Diameter: ⌢38mm (top and bottom)
• Drain Plug: 42014
• Construction: All Aluminium, Nocolok Brazed, Heliarc Welded
• Transmission: Manual (MT)
• Fitment: Direct bolt-in, no modifications required

Cross Reference

• Koyorad: KV082303R
• Honda OEM: 19010 PRZ A03 / 19010 PRZ A04

Fitment Table

• Year · Make · Model · Chassis · Submodel
• 1990–1997 · Honda · NSX · NA1 (2D Coupe) · Base – C30A1 3.0L Aspirated Petrol RWD (206kW)
• 1995–2001 · Honda · NSX · NA1 (2D Coupe) · Base – C30A3 3.0L Aspirated Petrol RWD (201kW)
• 1995–2005 · Honda · NSX · NA1 (2D Coupe) · Base – C30A4 3.0L Aspirated Petrol RWD (188kW)
• 1997–2005 · Honda · NSX · NA2 (2D Coupe) · Base – C32B2 3.2L Aspirated Petrol RWD (206kW)

Sold individually. Manual transmission fitment only. Lead times may apply — contact us for availability and shipping estimates.