Koyorad N-FLO All-Aluminum Radiator

Koyorad N-FLO All-Aluminum Radiator - Toyota GR86 / Subaru BRZ / FR-S (2013+)

Dual-Pass Cooling Efficiency & Slim-Profile Engineering

Maximize your cooling performance without sacrificing engine bay space with the Koyorad N-FLO All-Aluminum Radiator. While traditional radiators use a "single-pass" design, the N-FLO series features strategically welded internal partitions that force coolant to pass through the core multiple times. This allows the radiator to dissipate significantly more heat than a standard unit of the same size. Built around a high-density 36mm Hyper V-Core, this radiator offers a 44 percent increase in thickness over the Gen 2 OEM unit while maintaining a slim profile that provides ample clearance for aftermarket turbo kits, superchargers, and heavy-duty fans

What’s Included in the Box:

- Koyorad N-FLO Aluminum Radiator: (1) 36mm Hyper V-Core assembly with internal partitions.

- Magnetic Drain Plug: Pre-installed to capture metallic debris and protect your water pump.

- Billet Filler Neck: Precision-machined for a high-pressure, leak-proof cap seal.

The Koyorad N-FLO Advantage

- N-FLO Multi-Pass Technology: Internal partitions create a "U-turn" flow path, increasing the time coolant stays in the radiator. This significantly boosts cooling efficiency in vehicles with restricted front-end airflow.

- 36mm Hyper V-Core: Optimized fin and tube pitch provides 125 percent more cooling surface than the 1st Gen OEM radiator, ensuring stable temps during track days and stop-and-go traffic.

- Thermal Relief Cutouts: The core is designed with specialized relief slits that allow the aluminum to expand and contract during extreme heat cycles, preventing the "warping" commonly found in cheaper aluminum radiators.

- Heli-Arc TIG Welding: Hand-welded at Koyorad’s private ISO 9001 certified facility, replacing the weak plastic tanks of the factory unit with high-strength, furnace-brazed aluminum.

- Automatic & Manual Compatibility: Specifically engineered to fit both Manual and Automatic transmission models across all generations of the 86/BRZ platform.

- OE-Spec Fitment: Retains all factory mounting points for fan shrouds, AC condensers, and hoses. No cutting, drilling, or specialized brackets are required for installation.

Product Specifications

- Part Number: VH012664N

- Core Thickness: 36mm

- Technology: N-FLO (Dual-Pass)

- Material: 6061-Grade Aluminum

- Weight: 11.8 lbs

- Core Dimensions: 13.50 inch Height x 25.50 inch Width

Vehicle Compatibility

- Toyota GR86 (2022, 2023, 2024, 2025, 2026+)

- Subaru BRZ (2022, 2023, 2024, 2025, 2026+)

- Toyota 86 / Scion FR-S (2013-2021)

- Subaru BRZ (2013-2021)

Precision Tip: The VH012664N is the ideal choice for street-driven cars that see occasional track use, as its 36mm core retains more space between the engine and the radiator than the 48mm "Competition" version. This extra space is critical if you plan on adding a front-mounted intercooler or a supercharger. Just like the other Koyorad units, this requires a "deep plunger" style radiator cap (like the Koyorad SK-C13) for a proper seal.