Koyo (Koyorad) Performance Radiator: Nissan 350Z / Fairlady Z Z33 VQ35DE 48mm 2003-2006
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Koyorad HH021568 – 48mm Series Radiator | Nissan 350Z (2003–2006)
Application: Nissan 350Z (2003–2006) | Part Number: HH021568
The Koyorad HH021568 is a high-performance 48mm core radiator engineered specifically for the Nissan 350Z (2003–2006). With a significantly thicker core than the OEM unit, this radiator delivers substantially improved cooling capacity — ideal for spirited street driving, track days, or any application where heat management is critical.
Constructed from lightweight, high-conductivity aluminium alloy, the HH021568 features Koyorad's precision-brazed construction for superior durability and thermal efficiency. The all-aluminium design reduces weight compared to OEM copper/brass units while dramatically improving heat dissipation.
Designed as a direct OEM replacement, the HH021568 bolts in without modification — retaining all factory mounting points, hose connections, and fan shroud compatibility for a clean, hassle-free installation.
Specifications:
| Part Number | HH021568 |
| Series | 48mm High Performance |
| Core Material | Aluminium Alloy |
| Core Thickness | 48mm |
| Fitment | Nissan 350Z (2003–2006) |
| Installation | Direct OEM Replacement – Bolt-On |
Cross Reference:
| Koyorad | KH021568 |