KOYORAD Radiator for Toyota 86, Subaru BRZ & GR86

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Chassis and engine fitment

• ZN6 / ZC6 (FA20 2.0L): 2013–2021 Subaru BRZ and 2012–2021 Toyota 86.
• ZN8 / ZD8 (FA24 2.4L): 2022+ Subaru BRZ and 2022+ Toyota GR86.
• Transmission: unlike most KOYORAD performance radiators, the 86 / BRZ / GR86 radiators are listed for both manual and automatic cars, with no external auxiliary transmission cooler required.
• Cross-compatibility: the radiators share physical dimensions across both chassis generations, with an updated internal partition design.

VH012664N — 36mm Hyper V-Core

• 36mm Hyper V-Core with NFLO dual-pass internal partition.
• Core depth 1.417", core height 13.50", core width 25.50".
• Weight approximately 11.8 lbs (~5.4kg).
• 44% thicker than the FA24 OEM core and 125% thicker than the FA20 OEM core.
• All-aluminium, hand TIG-welded end tanks, Nocolok-brazed core, brushed finish.
• Individually triple pressure tested at the factory.
• 1/8 PT accessory port for an aftermarket water temperature sensor.

Suited to street-driven cars, spirited road use, occasional track days and autocross, and to owners replacing an ageing OEM radiator.

HH012664 — 48mm Competition Spec

• 48mm Hyper V-Core with NFLO dual-pass internal partition.
• Identical mounting points, fitment and fan shroud retention to the 36mm version.
• All-aluminium, hand TIG-welded end tanks, Nocolok-brazed core, brushed finish.
• Individually triple pressure tested.
• Listed for manual and automatic cars across ZN6 / ZC6 and ZN8 / ZD8.

Aimed at regular track use, time attack builds and cars with forced induction or other modifications that raise heat output. For most street cars and occasional track days the 36mm version is sufficient.

Why these platforms benefit from a radiator upgrade

Both chassis generations use a relatively narrow front grille opening, which limits the airflow available to the cooling system at lower speeds. The factory radiator also uses an aluminium core with plastic end tanks, and those tanks can fail from thermal cycling after roughly 8–10 years, typically at the inlet tank near the hose outlet. Many original FA20 cars in Australia are now in that age window.

The KOYORAD radiators are all-aluminium with no plastic tanks, use a deeper 36mm or 48mm core, and include KOYORAD's NFLO internal partition design. KOYORAD also builds strategically placed thermal relief cutouts into these radiators, allowing the core to flex slightly under heat cycling rather than stressing the welded joints.

Both radiators are designed to install in the factory radiator position using the OEM mounting points, OEM fan shroud bolts and OEM hose locations, with no cutting, bracket modification or relocation of supporting components. Installation by a qualified professional workshop is recommended, as the job involves draining, refilling and correctly bleeding the cooling system.

• Radiator cap: not included, as cap pressure ratings vary by build target. The OEM cap fits the KOYORAD filler neck; the KOYORAD SK-C13 1.3 Bar cap is available as an upgrade.
• Temperature sensor port: a 1/8 PT accessory port is supplied plugged and accepts a standard 1/8 PT thread sensor for a radiator-mounted coolant temperature reading.
• Coolant: fresh coolant and distilled water to the vehicle manufacturer's specification will be required at refill.
• Filler neck: a KOYORAD aluminium filler neck is listed separately for ZN6 / ZC6 cars.

Does the KOYORAD radiator fit automatic 86, BRZ and GR86 models?

Yes. Unlike most KOYORAD performance radiators, the 86 / BRZ / GR86 radiators are listed for both manual and automatic transmissions, and no external auxiliary transmission cooler is required.

Which chassis codes are covered?

ZN6 and ZC6 cars with the FA20 2.0L engine (2012–2021), and ZN8 and ZD8 cars with the FA24 2.4L engine (2022 onwards).

Should I choose the 36mm or the 48mm Competition Spec radiator?

The 36mm VH012664N suits street-driven cars and occasional track days. The 48mm HH012664 adds core depth for regular track use, competition cars and builds with forced induction or higher heat output.

Is a radiator cap included?

No. The radiators ship without a cap because pressure ratings vary by build. The OEM cap fits the filler neck, and the KOYORAD SK-C13 1.3 Bar cap is available as an upgrade.