Koyo HH010647 Aluminum Radiator for 97-05 Toyota Aristo/Lexus GS300

Vehicle Fitment

• 1997-2005 Toyota Aristo JZS161 (2JZ-GTE, JDM twin-turbo)
• 1997-2005 Toyota Aristo JZS160 (2JZ-GE, JDM naturally aspirated)
• 1997-2005 Lexus GS300 (2JZ-GE, USDM/global naturally aspirated)

Fitment Notes

• Verify your specific chassis code (JZS160 vs. JZS161) and engine variant (2JZ-GTE vs. 2JZ-GE) before ordering, as cooling system fitment can differ between variants
• Coolant flush and refill required after installation; verify correct coolant type for the 2JZ platform

Features

• Direct-fit, OEM-quality premium radiator engineered specifically for the JZS160/JZS161 platform
• Improved cooling capacity over the factory radiator, with higher flow rate and better heat dissipation
• Essential upgrade for the thermal demands of the 2JZ-GTE twin-turbo engine under sustained high-load driving
• Manufactured by Koyo Radiator Co., a Tier 1 Japanese OEM supplier to major automakers
• Also serves as a quality OEM-spec replacement for the naturally aspirated 2JZ-GE

Specifications

• Construction: All-aluminum, HH-series
• Length: 36.0in
• Width: 18.0in
• Height: 6.0in
• Weight: Approx. 22 lbs

Included Components

• 1x Koyo HH010647 aluminum radiator

Product Description

The Koyo HH010647 is a direct-fit, high-performance aluminum radiator engineered for the 1997-2005 Toyota Aristo (JZS160/JZS161) and Lexus GS300, offering improved cooling capacity over the factory unit. It's built to handle the increased heat demands of the 2JZ-GTE twin-turbo engine under spirited street, touge, and track driving, while also serving as an OEM-spec-quality replacement for naturally aspirated 2JZ-GE applications.

Manufactured by Koyo Radiator Co., one of Japan's most respected OEM and aftermarket radiator makers, the HH-series delivers a higher flow rate and better heat dissipation than the stock radiator for improved reliability during sustained high-load driving. Since fitment can vary between the JZS160, JZS161, and GS300 chassis codes, confirm your exact chassis and engine combination before ordering, and plan for a full coolant flush and refill after installation.