Koyorad A2542 Radiator

Koyorad A2542 Radiator for Lexus RX300

The Koyorad A2542 radiator is an OE-equivalent replacement built for 2001-2003 Lexus RX300 applications. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct-fit cooling system service.

Key Features

• Fits 2001-2003 Lexus RX300, N/A
• Aluminum core construction with plastic tanks
• Single-row core design
• Core dimensions: 17.6875 in. height, 30.0625 in. width, 0.625 in. thickness
• Inlet and outlet diameters: 1.375 in.
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.125 in.

Detailed Description

Built for the Lexus RX300 cooling system, the Koyorad A2542 radiator is engineered as an OE-style replacement that matches the original application requirements. The aluminum core supports efficient heat transfer, while the plastic tank design follows the factory-style construction used on many OEM radiators. With the internal transmission oil cooler included, this radiator supports vehicles equipped with integrated transmission fluid cooling.

For buyers searching for a 2001 Lexus RX300 radiator, 2002 Lexus RX300 radiator, or 2003 Lexus RX300 radiator, the Koyorad A2542 offers a direct replacement option based on the confirmed fitment data. The part number A2542 is also useful when cross-checking radiator listings for the Lexus RX300 cooling system.

What This Radiator Helps Address

• Overheating caused by a failing radiator core
• Coolant leaks from aged plastic tanks or seams
• Reduced cooling efficiency from corrosion or internal blockage
• Transmission fluid temperature control issues in radiator-equipped systems
• Replacement needs after physical damage to the original radiator

Installation Notes and Tips

Verify inlet and outlet hose diameters, core dimensions, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm proper coolant fill and bleed procedures after replacement. The radiator is listed for 2001-2003 Lexus RX300, N/A, so match the vehicle configuration to the confirmed fitment before ordering.

Quality Assurance

Koyorad states that its radiators are built to OE-equivalent standards using technical manufacturing experience focused on replacement fitment and function. Part number A2542 is designed for direct application on the confirmed Lexus RX300 years listed above.