Koyo (Koyorad) Performance Radiator: Toyota Supra JZA70 1JZ-GTE MT 1990-1993

Koyo Performance Radiator – Toyota Supra JZA70 1JZ-GTE MT 1990–1993

Application: Toyota Supra | E-JZA70 (2D Coupe) | 1JZ-GTE 2.5L Twin Turbo Petrol RWD | Manual Transmission

Part Number: R0171 / KL010706R

The A70 Supra is where Toyota's performance story really began to take shape — and the JZA70 with the 1JZ-GTE twin-turbo inline-six is the one that enthusiasts still seek out today. It's a capable, tuneable platform, and like any turbocharged engine pushing hard, cooling is critical to keeping it at its best.

Koyorad's all-aluminium radiator is a direct bolt-in performance upgrade for the JZA70, engineered to handle the thermal demands of the 1JZ-GTE in both stock and modified form. 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: R0171 / KL010706R
• Core Thickness: 53mm
• Core Dimensions (H × W): 375 × 635/659mm
• Tube Pitch: 60/60 × 659mm
• Inlet / Outlet Diameter: Ø35mm (top & bottom)
• Drain Plug: M16
• 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: R0171 / KL010706R
• Toyota OEM: 16400 46060 / 16400 46210 / 16400 46220

Fitment

• Year · Make · Model · Chassis · Submodel
• 1990–1991 · Toyota · Supra · JZA70 (2D Coupe) · Turbo – 1JZ-GTE 2.5L Twin Turbo Petrol RWD
• 1990–1993 · Toyota · Supra · JZA70 (2D Coupe) · Turbo – 1JZ-GTE 2.5L Twin Turbo Petrol RWD

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