Koyorad A2356 Radiator

Koyorad A2356 Radiator for Lexus IS300

The Koyorad A2356 radiator is an OE-equivalent replacement built for 2001-2005 Lexus IS300 models. It combines an aluminum core with plastic tanks and includes an internal transmission oil cooler for direct-fit cooling system service.

Key Features

• Fits 2001-2005 Lexus IS300
• Part number: A2356
• Aluminum core with 1-row construction
• Plastic tank design
• Core dimensions: 14.75 in. height, 29.1875 in. width, 1 in. thickness
• 1.375 in. inlet and outlet diameters
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 1.125 in.

Product Details

Koyorad A2356 is a replacement radiator for Lexus IS300 cooling system repair and maintenance. The aluminum core supports efficient heat transfer, while the integrated transmission oil cooler helps service vehicles equipped with automatic transmission cooling through the radiator assembly. This radiator is built to match OE-style fitment and dimensions for 2001-2005 Lexus IS300 applications, making it a practical choice when replacing a leaking, clogged, or damaged factory unit. If you are searching for a Lexus IS300 radiator, Koyorad A2356 provides the core size, inlet and outlet sizing, and cooler integration needed for a direct replacement.

Common Uses

• Replacing a cracked or leaking radiator
• Restoring proper engine coolant flow
• Addressing overheating caused by restricted radiator passages
• Servicing a failed internal transmission oil cooler
• Repairing cooling system damage from age, corrosion, or impact

Installation Notes and Tips

Verify inlet and outlet diameters, core dimensions, and transmission cooler connections before installation. Flush the cooling system and inspect hoses, clamps, and related components for wear before installing the new radiator. For Lexus IS300 radiator replacement service, confirm that the transmission cooler lines are clean and properly routed to avoid contamination or leaks.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using technical experience focused on replacement cooling components. This part cross-references Denso (e.g., 221-0508) for the same application.