Koyorad HH021568 Racing Radiator for 2003-2006 Nissan 350Z 3.5L VQ35DE MT

Vehicle Fitment

• 2003-2006 Nissan 350Z (Z33, 3.5L V6 VQ35DE, Manual Transmission)

Features

• All-aluminum HH Series high-performance radiator core for enhanced heat dissipation
• 48 mm thick Hyper core increases coolant capacity and thermal efficiency
• Precision Nocolok brazed construction for corrosion resistance and long life
• Direct OEM-specific bolt-in design with stock fan shroud and hose compatibility
• High fin density core for superior heat transfer
• Billet aluminum filler neck for reliable sealing performance
• 1/8"-NPT accessory port included for temperature sensor integration
• Designed for spirited driving and track use cooling performance

Specifications

• Part Number: HH021568
• Core Thickness: ~48 mm Hyper core
• Material: All-aluminum (core & tanks)
• Compatible Engine: 3.5 L V6 VQ35DE
• Transmission: Manual Transmission (MT) only
• Fitment: Nissan 350Z (Z33) 2003-2006
• Mounting: OE-specific mounting points, retains stock fan and hoses
• Accessory Port: Threaded 1/8"-NPT threaded port (plug included)

Included Components

• 1x All-aluminum radiator assembly
• 1x Billet aluminum filler neck (installed)
• 1x 1/8"-NPT accessory port plug

Product Description

The **Koyorad HH021568 Racing Radiator** is a performance-oriented cooling upgrade engineered specifically for the **2003-2006 Nissan 350Z** equipped with the **3.5 L V6 VQ35DE engine** and **manual transmission**. Featuring a robust all-aluminum HH Series core that's approximately 48 mm thick, this radiator increases coolant capacity and improves thermal dissipation compared to the stock unit - helping to maintain optimal engine temperatures under spirited street driving or track conditions.

Precision Nocolok brazed construction combined with a high-density fin design provides durability and consistent cooling performance. The direct OEM-specific bolt-in fit uses factory mounting points and retains compatibility with stock fan shrouds and hoses for easier installation. Included billet aluminum filler neck and a threaded accessory port for a temperature sensor add functionality and reliability, making the HH021568 an excellent cooling solution for enthusiasts seeking improved cooling performance on their Nissan 350Z.