Koyo (Koyorad) Performance Radiator: Honda Civic EG / EK 1991-2000 Non A/C

Koyo Performance Radiator – Honda Civic EG / EK (1991–2000)

Application: Honda Civic EG / EK | Multiple Chassis | Manual Transmission | Non A/C

Part Number: KV081225U06/ VH0812N1

The EG and EK Civic are two of the most iconic Honda platforms ever built — lightweight, nimble, and endlessly tuneable. Whether you're running a stock D-Series daily or a full B16/B16B track build, the factory radiator can become a limiting factor under sustained high-load conditions. The Koyorad KV081225U06 is a direct bolt-in performance upgrade engineered specifically for the EG and EK Civic, delivering improved cooling capacity without any cutting, drilling, or fabrication.

Koyorad's all-aluminium construction and high-efficiency 36mm 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.

⚠️ Fitment Note: This radiator requires removal of the factory air conditioning system for fitment. It will not fit vehicles equipped with A/C.

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: KV081225U06
• Core Thickness: 36mm
• Core Dimensions (H × W): 350 × 669/693mm
• Tank Dimensions: 43/43 × 701mm
• Inlet / Outlet Diameter: ⌢32mm (top and bottom)
• Drain Plug: M18 (42014)
• Construction: All Aluminium, Nocolok Brazed, Heliarc Welded
• Transmission: Manual (MT)
• A/C Compatibility: Non A/C only — requires A/C removal for fitment
• Fitment: Direct bolt-in, no modifications required

Cross Reference

• Koyorad: KV081225U06
• Koyorad (alt): VH0812N1

Fitment Table

• Year · Make · Model · Chassis · Submodel
• 1991–1995 · Honda · Civic · EG4 (2D Hatch) · GL – D15B4 1.5L Aspirated Petrol FWD (72kW)
• 1991–1993 · Honda · Civic · EG5 (2D Hatch) · Si – D16A8 1.6L Aspirated Petrol FWD (96kW)
• 1993–1995 · Honda · Civic · EG5 (2D Hatch) · Si – D16Y1 1.6L Aspirated Petrol FWD (96kW)
• 1992–1995 · Honda · Civic · EG6 (2D Hatch) · SiR – B16A 1.6L Aspirated Petrol FWD (118kW)
• 1993–1995 · Honda · Civic · EG8 (4D Sedan) · Base – D15B7 1.5L Aspirated Petrol FWD (74kW)
• 1991–1993 · Honda · Civic · EG8 (4D Sedan) · GL – D15B4 1.5L Aspirated Petrol FWD (72kW)
• 1993–1995 · Honda · Civic · EG8 (4D Sedan) · VEi – D15Z1 1.5L Aspirated Petrol FWD (66kW)
• 1991–1993 · Honda · Civic · EH9 (4D Sedan) · Si – D16A8 1.6L Aspirated Petrol FWD (96kW)
• 1993–1995 · Honda · Civic · EH9 (4D Sedan) · Si – D16Y1 1.6L Aspirated Petrol FWD (66kW)
• 1999–2000 · Honda · Civic · EJ6 (2D Coupe) · GLi – D16Y7 1.6L Aspirated Petrol FWD (77kW)
• 1996–1999 · Honda · Civic · EJ8 (2D Coupe) · VTi – D16Y8 1.6L Aspirated Petrol FWD (93kW)
• 1995–2000 · Honda · Civic · EK1 (2D Hatch) · LXi – D16Y4 1.6L Aspirated Petrol FWD (88kW)
• 1995–2000 · Honda · Civic · EK1 (2D Hatch) · VTi-S – D16Y6 1.6L Aspirated Petrol FWD (93kW)
• 1995–2000 · Honda · Civic · EK1 (4D Sedan) · LXi – D16Y4 1.6L Aspirated Petrol FWD (88kW)
• 1995–2000 · Honda · Civic · EK1 (4D Sedan) · VTi – D16Y5 1.6L Aspirated Petrol FWD (93kW)
• 1995–2000 · Honda · Civic · EK1 (4D Sedan) · VTi-S – D16Y6 1.6L Aspirated Petrol FWD (93kW)
• 1995–1999 · Honda · Civic · EK4 (2D Hatch) · VTi-R – B16A2 1.6L Aspirated Petrol FWD (118kW)
• 1997–2000 · Honda · Civic · EK9 (2D Hatch) · Type R – B16B 1.6L Aspirated Petrol FWD (137kW)
• 1999–2000 · Honda · Civic · EM1 (2D Coupe) · VTi-R – B16A2 1.6L Aspirated Petrol FWD (118kW)

Sold individually. Manual transmission fitment only. Not compatible with vehicles equipped with factory air conditioning — A/C removal required. Lead times may apply — contact us for availability and shipping estimates.