The 2JZ deserves better than a 25-year-old plastic-tank radiator. Koyo's all-aluminum Hyper-V series (HH010647) is the direct bolt-in cooling upgrade for the JZS160/JZS161 chassis — street, VIP, or full track duty.
Genuine Koyo. OEM-style fitment. Built for enthusiasts who run their inline-six hard.
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Your 2JZ Runs Hot. This Is The Fix.
All-Aluminum Construction
Factory radiators on the S160 chassis use crimped plastic end tanks that get brittle and crack with age and heat cycles. Koyo's Hyper-V series is all-aluminum for durability and maximum heat transfer.
High-Density Racing Core
The dense 36mm Hyper-V core dramatically increases surface area and cooling capacity over the stock unit — insurance for boosted 2JZ-GTE Aristo V300s, turbo GS300 builds, and hot Florida summers alike.
True Bolt-In Fitment
Engineered to OEM-style specs for the 1997-2005 Toyota Aristo and Lexus GS300, so installation uses the factory location and mounting points. No cutting, no fabrication, no guesswork.
Specifications
| Brand | Koyo (Koyorad) |
|---|---|
| Part Number | HH010647 · SKU KOYHH010647 |
| Series | Hyper-V (HH) all-aluminum racing radiator |
| Fitment | 1997-2005 Toyota Aristo & Lexus GS300 (JZS160 / JZS161) |
| Engine | 2JZ-GE · popular with 2JZ-GTE (Aristo V300) & swap builds |
| Shipping Size | Approx. 36" × 18" × 6" · 22 lbs |
| Price | $796.00 USD — order here |
Built For The Long Haul
- Genuine Koyo quality — the radiator brand trusted in professional motorsport for decades
- Significantly improved heat rejection over the aging factory unit
- Direct OEM-style fit for the second-gen GS300 / Aristo chassis
- Ideal for street builds, VIP daily drivers, drift and track cars
- Sold and supported by PMD — real fitment help before you buy
Questions about fans, shrouds, automatic transmissions, or a swap? Call or text 904-755-8360 (M-F 9am-5pm EST) and we'll confirm your setup.
Common Questions
Will this fit my 1998 Lexus GS300?
Yes. The Koyo HH010647 is a direct fit for all 1997-2005 Lexus GS300 and Toyota Aristo models on the JZS160/JZS161 chassis, mounting in the factory location.
Is it worth it for a 2JZ-GTE swap or turbo build?
That's exactly what the Hyper-V series is for. The high-density aluminum core gives boosted 2JZ builds the cooling headroom the stock radiator was never designed to provide.
Why buy from PMD?
PMD Premier Motoring Development is a Jacksonville, FL specialist in premium Japanese performance parts, wheels, and VIP styling. We stock what we believe in — reach out and talk to people who actually build these cars. Buy Once, Cry Once.
Keep Reading
Koyo Racing Radiators for the 97-05 Aristo / GS300 Land at PMD
Why the 2JZ's biggest weakness after 25 years is cooling — and how the Hyper-V series fixes it.
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A heritage remake for JZ engine builders — another icon back in stock.
PMD — Redefine Your Limits
The philosophy behind the shop: quality without compromise, for enthusiasts who demand the best.
Ready To Keep Your GS Cool?
Genuine Koyo HH010647 — $796.00 · Support Crew for the Serious.